[scheduler] Add E2E tests for tasks quotas

[anshul98ks123]

Issue(s)

E2E tests for thirdeye quotas

Description

ThirdEye Free Tier Usage Quota

This PR adds basic E2E integration tests for thirdeye monthly tasks quotas (#1756)

Scheduler Tasks Quota tests
- create datasource, dataset
- verify task quotas
- create alert and ensure first detection task creation
- create subscription group
- wait for detection and notification tasks to schedule & run
- verify that quota has been hit and no new tasks are being created
- create another task and subscription group
- verify that no new tasks are created except historical after create detection type

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Name	Status	Preview	Comments	Updated (UTC)
thirdeye	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 8, 2025 0:14am