Fix brew test version check by committing formula to tap

The error "Testing requires the latest version" occurs because Homebrew
checks if the installed version matches the tap's version.

Solution: Commit the formula to the tap's git repository after copying
it, so Homebrew recognizes it as the official version in the tap.

Steps:
1. Create tap (brew tap-new)
2. Copy formula to tap
3. Git commit the formula to tap (NEW)
4. Install from tap
5. Test from tap (now succeeds)

Author: sbryngelson

.github/workflows/homebrew.yml

@@ -50,6 +50,12 @@ jobs:
           echo "Copying formula to tap..."
           cp packaging/homebrew/mfc.rb $(brew --repository)/Library/Taps/mflowcode/homebrew-test/Formula/mfc.rb
           
+          echo "Committing formula to tap..."
+          cd $(brew --repository)/Library/Taps/mflowcode/homebrew-test
+          git add Formula/mfc.rb
+          git commit -m "Add MFC formula"
+          cd -
+          
           echo "Installing MFC from local tap..."
           brew install --build-from-source --verbose mflowcode/test/mfc 2>&1 | tee /tmp/brew-install.log
       
@@ -84,7 +90,7 @@ jobs:
       - name: Run formula tests
         run: |
           echo "Running Homebrew formula tests..."
-          brew test mfc
+          brew test --verbose mflowcode/test/mfc
       
       - name: Test MFC binaries
         run: |