chore: use same dataset for frontend testing

[Bento007]

Reason for Change

• make one less play to keep updated when the test dataset changes.

Changes

• use tests.functional.backend.constants.DATASET_URI when setting up the frontend for integration testing.

[github-actions]

Deployment Summary

• backend_url: https://pr-7301-backend.rdev.single-cell.czi.technology
• backend_de_url: https://pr-7301-backend-de.rdev.single-cell.czi.technology
• backend_wmg_url: https://pr-7301-backend-wmg.rdev.single-cell.czi.technology
• frontend_url: https://pr-7301-frontend.rdev.single-cell.czi.technology
• delete_db_task_definition_arn: arn:aws:ecs:us-west-2:***:task-definition/dp-rdev-pr-7301-deletion:1
• migrate_db_task_definition_arn: arn:aws:ecs:us-west-2:***:task-definition/dp-rdev-pr-7301-migration:1

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.87%. Comparing base (ca54feb) to head (41dd5fe).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7301      +/-   ##
==========================================
- Coverage   92.87%   92.87%   -0.01%     
==========================================
  Files         192      192              
  Lines       16426    16426              
==========================================
- Hits        15256    15255       -1     
- Misses       1170     1171       +1     

Flag	Coverage Δ
unittests	92.87% <ø> (-0.01%)	⬇️

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