[DO NOT MERGE] ci(docs) deploy from sphinx-vite-builder branch

why: Preview the rendered docs against gp-sphinx 0.0.1a16.dev4 on the
live deploy target before merging. Reverted before final merge
alongside the [DO NOT MERGE] PR title.

Author: tony

.github/workflows/docs.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+      - sphinx-vite-builder
 
 permissions:
   contents: read