Add option to manually run the component build action

Bug: 414332459
Change-Id: I7fbc297d070890026504669afd19424fc302820e
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7083630
Commit-Queue: Alex Rudenko <alexrudenko@chromium.org>
Reviewed-by: Alex Rudenko <alexrudenko@chromium.org>
Auto-Submit: Kim-Anh Tran <kimanh@chromium.org>

Author: ktran

.github/workflows/publish-component-docs.yml

@@ -4,6 +4,8 @@ on:
   schedule:
     - cron: "0 7 * * *"
 
+  workflow_dispatch:
+
 jobs:
   build-docs:
     runs-on: ubuntu-latest