Add configurable retry logic to request queue:

- Introduce retry settings for specific HTTP status codes with exponential backoff and jitter.
- Refactor `requestQueue` to support method-based concurrency limits and retry configuration.
- Update `RequestQueueProgress` to respect minimum batch size for progress visibility.
- Add unit tests for retry logic, progress visibility, and updated queue behavior.
- Centralize request queue configuration in `REQUEST_QUEUE_CONFIG`.

tests/unit/authenticated-request.spec.js

@@ -41,7 +41,12 @@ describe('authenticatedRequest', () => {
   beforeEach(() => {
     axiosMock.mockReset();
     __resetRequestQueueForTests();
-    __configureRequestQueueForTests({ maxConcurrentGet: 1, maxConcurrentOther: 1, spacingMs: 0 });
+    __configureRequestQueueForTests({
+      maxConcurrentGet: 1,
+      maxConcurrentOther: 1,
+      spacingMs: 0,
+      retryByStatusCode: {}
+    });
     localStorage.clear();
     localStorage.setItem('token', 'token');
   });