fix: resolve type errors and warnings

Author: pganesh-apphelix

src/optimizer-page/CourseOptimizerPage.tsx

@@ -151,7 +151,7 @@ const CourseOptimizerPage: FC<{ courseId: string }> = ({ courseId }) => {
                     size="md"
                     className="px-4 rounded-0 scan-course-btn"
                     onClick={() => dispatch(startLinkCheck(courseId))}
-                    disabled={linkCheckInProgress && !errorMessage}
+                    disabled={!!(linkCheckInProgress && !errorMessage)}
                   >
                     {linkCheckInProgress && !errorMessage ? (
                       <>

src/optimizer-page/scan-results/ScanResults.tsx

@@ -21,7 +21,7 @@ import SectionCollapsible from './SectionCollapsible';
 import PreviousRunSectionCollapsible from './PreviousRunSectionCollapsible';
 import BrokenLinkTable from './BrokenLinkTable';
 import PreviousRunLinkTable from './PreviousRunLinkTable';
-import { LinkCheckResult } from '../types';
+import { LinkCheckResult, Section } from '../types';
 import { countBrokenLinks } from '../utils';
 import FilterModal from './filterModal';
 import { useWaffleFlags } from '../../data/apiHooks';
@@ -94,18 +94,18 @@ const ScanResults: FC<Props> = ({ data }) => {
       };
     };
 
-    const vSections = [];
+    const vSections: Section[] = [];
 
-    if (data?.courseUpdates?.length > 0) {
-      const courseUpdatesSection = createVirtualSection(data.courseUpdates, 'course-updates', 'courseUpdatesHeader');
+    if (data?.course_updates && data.course_updates.length > 0) {
+      const courseUpdatesSection = createVirtualSection(data.course_updates, 'course-updates', 'courseUpdatesHeader');
       if (courseUpdatesSection) {
         vSections.push(courseUpdatesSection);
       }
     }
 
-    if (data?.customPages?.length > 0) {
+    if (data?.custom_pages && data.custom_pages.length > 0) {
       const customPagesSection = createVirtualSection(
-        data.customPages,
+        data.custom_pages,
         'custom-pages',
         'customPagesHeader',
       );
@@ -115,7 +115,7 @@ const ScanResults: FC<Props> = ({ data }) => {
     }
 
     return vSections;
-  }, [data?.courseUpdates, data?.customPages, intl]);
+  }, [data?.course_updates, data?.custom_pages, intl]);
 
   // Combine virtual sections with regular sections
   const allSectionsForBrokenLinks = useMemo(