Fix TypeScript error: Type 'unknown' not assignable to ReactNode in ObjectDetailModal

- Added explicit React import
- Converted complex conditional rendering to IIFE for proper type inference
- Fixed type safety issues in metadata conditional rendering
- Resolves build failure in Azure DevOps pipeline

frontend/src/components/ObjectDetailModal.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect } from 'react';
+import React, { useState, useEffect } from 'react';
 import { getDataValidationObject, type DataValidationObjectResponse } from '../services/api';
 import { useAuthStore } from '../stores/authStore';
 
@@ -213,7 +213,7 @@ export default function ObjectDetailModal({ objectId, onClose, onObjectClick, on
                 </svg>
                 <p className="text-red-600 font-semibold">{error}</p>
               </div>
-            ) : objectData ? (
+            ) : objectData !== null ? (
               <div className="space-y-6">
                 {/* Basic Info */}
                 <div>
@@ -235,7 +235,6 @@ export default function ObjectDetailModal({ objectId, onClose, onObjectClick, on
                   </div>
                 </div>
 
-                {/* Attributes */}
                 <div>
                   <h3 className="text-sm font-bold text-gray-700 uppercase tracking-wider mb-4 flex items-center gap-2">
                     <div className="w-1 h-5 bg-gradient-to-b from-blue-500 to-blue-600 rounded-full"></div>
@@ -254,10 +253,14 @@ export default function ObjectDetailModal({ objectId, onClose, onObjectClick, on
                         </tr>
                       </thead>
                       <tbody className="bg-white divide-y divide-gray-100">
-                        {Object.entries(objectData.object as Record<string, any>)
+                        {(() => {
+                          const obj = objectData.object as Record<string, any>;
+                          const entries = Object.entries(obj)
                             .filter(([key]) => !key.startsWith('_'))
-                          .sort(([a], [b]) => a.localeCompare(b))
+                            .sort(([a], [b]) => a.localeCompare(b));
-                          .map(([key, value]) => {
+                          
+                          const rows: React.ReactElement[] = entries
+                            .map(([key, value]: [string, any]) => {
                               const renderedValue = renderAttributeValue(key, value);
                               if (renderedValue === null) return null;
                               
@@ -271,7 +274,11 @@ export default function ObjectDetailModal({ objectId, onClose, onObjectClick, on
                                   </td>
                                 </tr>
                               );
-                          })}
+                            })
+                            .filter((node): node is React.ReactElement => node !== null);
+                          
+                          return rows;
+                        })()}
                         {Object.entries(objectData.object as Record<string, any>)
                           .filter(([key]) => !key.startsWith('_')).length === 0 && (
                           <tr>
@@ -289,14 +296,10 @@ export default function ObjectDetailModal({ objectId, onClose, onObjectClick, on
                 </div>
 
                 {/* Metadata */}
-                {objectData.object && typeof objectData.object === 'object' && '_jiraUpdatedAt' in objectData.object && (
-                  <div>
-                    <h3 className="text-sm font-bold text-gray-700 uppercase tracking-wider mb-4 flex items-center gap-2">
-                      <div className="w-1 h-5 bg-gradient-to-b from-blue-500 to-blue-600 rounded-full"></div>
-                      Metadata
-                    </h3>
-                    <div className="bg-white rounded-xl border border-gray-200 p-6 shadow-sm">
                 {(() => {
+                  if (!objectData.object || typeof objectData.object !== 'object' || objectData.object === null || !('_jiraUpdatedAt' in objectData.object)) {
+                    return null;
+                  }
                   const obj = objectData.object as Record<string, unknown>;
                   const updatedAt = obj._jiraUpdatedAt;
                   const createdAt = obj._jiraCreatedAt;
@@ -312,6 +315,12 @@ export default function ObjectDetailModal({ objectId, onClose, onObjectClick, on
                   if (!updatedAtValue && !createdAtValue) return null;
                   
                   return (
+                    <div>
+                      <h3 className="text-sm font-bold text-gray-700 uppercase tracking-wider mb-4 flex items-center gap-2">
+                        <div className="w-1 h-5 bg-gradient-to-b from-blue-500 to-blue-600 rounded-full"></div>
+                        Metadata
+                      </h3>
+                      <div className="bg-white rounded-xl border border-gray-200 p-6 shadow-sm">
                         <div className="grid grid-cols-2 gap-6">
                           {updatedAtValue && (
                             <div>
@@ -330,12 +339,11 @@ export default function ObjectDetailModal({ objectId, onClose, onObjectClick, on
                             </div>
                           )}
                         </div>
+                      </div>
+                    </div>
                   );
                 })()}
               </div>
-                  </div>
-                )}
-              </div>
             ) : (
               <div className="text-center py-16 text-gray-500">
                 <div className="w-12 h-12 border-4 border-blue-600 border-t-transparent rounded-full animate-spin mx-auto mb-4" />