[DEFECT] Page Porlert breaks on reload

Problem Statement

When reloading the application while inside the Page Portlet (/#/pages), the page list enters an infinite loading state and never resolves. The browser console shows an error that appears to be caused by a race condition during initialization.

This issue also occurs if you navigate directly to the Page Portlet URL and reload.

Steps to Reproduce

1. Open the Page Portlet (/#/pages).
2. Reload the browser tab (or navigate directly to the URL and reload).
3. Observe that the page remains stuck in a loading state.
4. Open the browser console and note the error indicating a likely race condition.

Video

https://github.com/user-attachments/assets/f2644774-e0bc-4cf4-aa13-63a1dec2f933

Acceptance Criteria

• Reloading the app on the Page Portlet initializes without errors.
• The page list loads correctly after a reload or direct navigation.
• No infinite loading state occurs.
• Console errors related to race conditions are resolved.

dotCMS Version

main/trunk

Severity

Medium - Some functionality impacted

Start at the Page Portlet entry point, /#/pages, and reproduce the reload or direct-navigation case while watching the browser console. Trace the initialization path implicated by the race-condition error and verify that the page list loads without errors or an infinite loading state.