fix: guard against undefined filePath in message parser to prevent TypeError crash#2144

MaxwellCalkin wants to merge 1 commit intostackblitz-labs:mainstackblitz-labs/bolt.diy:mainfrom

MaxwellCalkin:fix/message-parser-missing-filepath-crashMaxwellCalkin/bolt.diy:fix/message-parser-missing-filepath-crashCopy head branch name to clipboard