Fix pre-commit PATH issue in CI

After pip installs pre-commit, the executable is placed in ~/.local/bin
which is not on PATH in the CI environment. Add ~/.local/bin to PATH
after installing pre-commit to ensure the command is available.

Author: nammn

scripts/evergreen/check_precommit.sh

@@ -10,6 +10,10 @@ export EVERGREEN_MODE=true
 if ! command -v pre-commit >/dev/null 2>&1; then
   echo "Installing pre-commit..."
   pip install pre-commit
+  # Add ~/.local/bin to PATH if it exists (pip installs scripts there)
+  if [[ -d "${HOME}/.local/bin" ]]; then
+    export PATH="${HOME}/.local/bin:${PATH}"
+  fi
 fi
 
 echo "Running pre-commit hooks..."