DEV: Add new widget deprecations to the collector (#93)

Extend the deprecation collector by adding new widget-related deprecations:
`discourse.widgets-decommissioned` and `discourse.widgets-end-of-life`. This
ensures these deprecations are properly tracked for future updates and
maintains consistency in the plugin's coverage.

Author: megothss

deprecation-finder/update_discourse_core_deprecations.mjs

@@ -78,6 +78,8 @@ const idsToInclude = [
   "discourse.native-array-extensions.unshiftObjects",
   "discourse.native-array-extensions.without",
   "discourse.post-stream-widget-overrides",
+  "discourse.widgets-decommissioned",
+  "discourse.widgets-end-of-life",
 ];
 
 async function isExcludedDir(filePath) {

lib/deprecation_collector/deprecation-ids.yml

@@ -151,5 +151,6 @@ discourse_deprecation_ids:
 - discourse.utils-decorators-import
 - discourse.utils-decorators-observes
 - discourse.utils-decorators-on
+- discourse.widgets-decommissioned
 - discourse.widgets-end-of-life
 - float-kit.d-toast.duration