fix: Add TypeScript compilation step to frontend workflows

[neubig]

This PR fixes #5343 by adding TypeScript compilation step to frontend workflows.

The changes:

1. Add npm run tsc step to both frontend-lint.yml and frontend-tests.yml
2. This ensures TypeScript errors are caught by frontend workflows before Python unit tests
3. The step runs before linting/testing to fail fast

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To run this PR locally, use the following command:

docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:0ffb9d7-nikolaik   --name openhands-app-0ffb9d7   docker.all-hands.dev/all-hands-ai/openhands:0ffb9d7