fix: clear external player paths on save

Entire-Checkpoint: f957cd9849e0

apps/web/src/app/settings/settings.component.spec.ts

@@ -925,4 +925,28 @@ describe('SettingsComponent', () => {
             component.settingsForm.value
         );
     });
+
+    it('clears external player paths in Electron when saved as empty', async () => {
+        const mockStore = settingsStore as unknown as MockSettingsStore;
+        mockStore.updateSettings.mockResolvedValue(undefined);
+        const setMpvPlayerPath = jest.spyOn(
+            window.electron,
+            'setMpvPlayerPath'
+        );
+        const setVlcPlayerPath = jest.spyOn(
+            window.electron,
+            'setVlcPlayerPath'
+        );
+
+        component.settingsForm.patchValue({
+            mpvPlayerPath: '',
+            vlcPlayerPath: '',
+        });
+
+        component.onSubmit();
+        await fixture.whenStable();
+
+        expect(setMpvPlayerPath).toHaveBeenCalledWith('');
+        expect(setVlcPlayerPath).toHaveBeenCalledWith('');
+    });
 });