ci(docs[temp]) Publish from try/spa-nav-ios-fix to validate iOS fix

why: Trigger the docs deploy on this branch so the rebuilt site at
libtmux-mcp.git-pull.com runs the patched spa-nav.js and we can
confirm the iPad sidebar-logo regression is gone.

what:
- Add try/spa-nav-ios-fix to the docs.yml push trigger.
- Drop this commit before merging once verified.

Author: tony

.github/workflows/docs.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - main
+      - try/spa-nav-ios-fix
 
 permissions:
   contents: read