test(settings): harden shared controls normalization coverage

libs/services/src/lib/settings-store.service.spec.ts

@@ -92,6 +92,7 @@ describe('SettingsStore dashboard rail settings', () => {
 
         await store.loadSettings();
 
+        expect(store.webPlayerSharedControls?.()).toBe(false);
         expect(store.getSettings().webPlayerSharedControls).toBe(false);
     });
 
@@ -110,6 +111,21 @@ describe('SettingsStore dashboard rail settings', () => {
         );
     });
 
+    it('serializes a malformed string "true" shared web controls update as false', async () => {
+        const store = injector.get(SettingsStore);
+
+        await store.updateSettings({
+            webPlayerSharedControls: 'true' as unknown as boolean,
+        });
+
+        expect(storage.set).toHaveBeenCalledWith(
+            STORE_KEY.Settings,
+            expect.objectContaining({
+                webPlayerSharedControls: false,
+            })
+        );
+    });
+
     it('deep-merges partial stored dashboard rail settings with enabled defaults', async () => {
         storedSettings = {
             player: VideoPlayer.VideoJs,