Add .bs.js to .gitignore for completeness

Also ignore the old .bs.js suffix to ensure no ReScript generated files
are ever committed, whether using the old or new suffix convention.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: justin808

.gitignore

@@ -63,5 +63,6 @@ client/app/bundles/comments/rescript/**/*.bs.js
 # Generated ReScript files (compiled from .res source files)
 **/*.res.js
 **/*.res.mjs
+**/*.bs.js
 
 .claude/