fix(usage): carry full filter set in breakdown tables and fix double fetch

- breakdown sub-tables now send all active filters (route/user/api_key), matching the trend chart
- summary tab filters the token trend by user and unions user options from both meta APIs (deduped by id)
- stabilize the filters reference so meta load no longer retriggers a second fetch on mount

.github/workflows/ci.yml

@@ -1,7 +1,6 @@
 name: CI
 
 on:
-  workflow_dispatch: {}
   push:
     branches:
       - 'main'
@@ -118,20 +117,3 @@ jobs:
           remote_path: releases/${{ steps.version.outputs.version }}.tar.gz
           accelerate: true
           clean: false
-
-  trigger-backend:
-    needs: build-publish
-    if: (github.event_name == 'push' && !startsWith(github.ref, 'refs/tags/')) || github.event_name == 'workflow_dispatch'
-    runs-on: ubuntu-22.04
-    steps:
-      - name: Dispatch backend build
-        uses: peter-evans/repository-dispatch@v3
-        with:
-          token: ${{ secrets.DISPATCH_PAT }}
-          repository: gpustack/gpustack
-          event-type: ui-built
-          client-payload: |
-            {
-              "ref": "${{ github.ref }}",
-              "sha": "${{ github.sha }}"
-            }