fix(ci): update fork test triggers to run on main and solidity changes

- Remove path filter on push to main (run on every main push)
- Add path filter for solidity/** on pull_request triggers

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

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

Author: paulbalaji

.github/workflows/solidity-fork-tests.yml

@@ -4,10 +4,9 @@ on:
   push:
     branches:
       - main
-    paths:
-      - '.github/workflows/solidity-fork-tests.yml'
   pull_request:
     paths:
+      - 'solidity/**'
       - '.github/workflows/solidity-fork-tests.yml'
   schedule:
     # Run daily at 6:00 UTC