test: add FE tests for new starter project templates

[Cristhianzl]

This pull request includes the addition of multiple integration tests for various project components. Each test is designed to verify the functionality of specific features by simulating user interactions and checking the expected outcomes. The most important changes include the addition of tests for the Financial Report Parser, Gmail Agent, Graph Rag, Meeting Summary, and News Aggregator.

Integration tests added:

• src/frontend/tests/core/integrations/Financial Report Parser.spec.ts: Added a test for the Financial Report Parser that checks if the page can load and process a financial report correctly.
• src/frontend/tests/core/integrations/Gmail Agent.spec.ts: Added a test for the Gmail Agent that verifies the ability to send an email using the agent.
• src/frontend/tests/core/integrations/Graph Rag.spec.ts: Added a test for the Graph Rag that ensures the page can build and run a graph query successfully.
• src/frontend/tests/core/integrations/Meeting Summary.spec.ts: Added a test for the Meeting Summary that checks the ability to upload an audio file and generate a summary.
• src/frontend/tests/core/integrations/News Aggregator.spec.ts: Added a test for the News Aggregator that verifies the functionality of aggregating news articles based on a query.

[codspeed-hq]

CodSpeed Performance Report

Merging #6772 will improve performances by 41.47%

_{Comparing cz/test-research-translation (9fe18a2) with main (05935ed)}

Summary

⚡ 1 improvements
✅ 13 untouched benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	test_build_flow_invalid_job_id	11.3 ms	8 ms	+41.47%