Fix showing empty destination source group header

CHANGELOG.md

@@ -19,6 +19,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
 - (**Migration**) Fix aborting bulk migration search/execution while webUI is served on a subpath
 - (**Migration**) Fix retry button never being shown for failed search/migration entries
+- (**Migration**) Fix showing an empty "Available" source group header when all sources are selected
 - (**Reader**) Fix scrollbar appearing with "fit to widt/height/screen" page scale mode and applied safe area insets
 - (**Reader**) Fix wrongly positioned mobile progress bar current page indicator
 - (**Reader**) Fix mobile progress bar previous/next chapter button visibility on hover and while disabled

src/features/migration/components/MigrationSourceList.tsx

@@ -177,7 +177,11 @@ export const MigrationSourceList = ({
                     groupCounts={groupCounts}
                     computeItemKey={computeItemKey}
                     groupContent={(index) => {
-                        const [group] = groupedSourcesBySelectionState[index];
+                        const [group, sourcesOfGroup] = groupedSourcesBySelectionState[index];
+
+                        if (!sourcesOfGroup.length) {
+                            return null;
+                        }
 
                         return (
                             <StyledGroupHeader
@@ -193,7 +197,7 @@ export const MigrationSourceList = ({
                                     {group ? t`Selected` : t`Available`}
                                 </Typography>
 
-                                {group && !!selectedSources.length && (
+                                {group && (
                                     <Typography variant="body2" color="text.secondary">
                                         {t`Drag to prioritize`}
                                     </Typography>