fix(frontend): the width of the branch dropdown appears inconsistent on medium-sized screens. (#11620)

frontend/src/components/features/home/repo-selection-form.tsx

@@ -131,7 +131,7 @@ export function RepositorySelectionForm({
         onBranchSelect={handleBranchSelection}
         defaultBranch={defaultBranch}
         placeholder="Select branch..."
-        className="max-w-[500px]"
+        className="max-w-full"
         disabled={!selectedRepository || isLoadingSettings}
       />
     );