fix(token-manager): reset requestTime on token acquisition failure (#316)

Reset `requestTime` and clear `pendingRequests` in the error handler
to prevent a 60-second authentication freeze after failed token
acquisition attempts. Previously, `requestTime` remained set after
failures, causing subsequent requests to queue indefinitely.

Signed-off-by: Norbert Biczo <pyrooka@users.noreply.github.com>

Author: pyrooka

auth/token-managers/token-manager.ts

@@ -189,6 +189,9 @@ export class TokenManager {
         this.pendingRequests.forEach(({ reject }) => {
           reject(err);
         });
+        // Reset the queue and the request time if the token acquisition fails.
+        this.pendingRequests = [];
+        this.requestTime = 0;
         throw err;
       });
   }