ci: run CI and release workflows on release branches (#1774)

ci.yml and release.yml only matched main, so PRs to and merges into
branch-* release branches ran no build or tests.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: timsaucer

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ name: CI
 
 on:
   pull_request:
-    branches: ["main"]
+    branches: ["main", "branch-*"]
 
 concurrency:
   group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}

.github/workflows/release.yml

@@ -27,6 +27,7 @@ on:
   push:
     branches:
       - "main"
+      - "branch-*"
     tags:
       - "*-rc*"      # Release candidates (e.g., 45.0.0-rc1)
       - "[0-9]+.*"   # Release tags (e.g., 45.0.0)