Add run_as support for alerts

[rileymccuen-nonemu-dropbox]

Changes

Add run_as support for alerts in Databricks Asset Bundles.

Previously, alerts were in the deny list for run_as configuration, meaning bundles with alerts would fail validation when a run_as identity was specified. This PR:

1. Removes alerts from the validation check that errors when run_as is set
2. Adds a new setRunAsForAlerts function that propagates the bundle's run_as configuration to alert resources via the AlertV2RunAs struct
3. Updates tests to include alerts in the allowed resources test case

Why

Alerts now support the run_as field in the API via the AlertV2RunAs struct, which accepts ServicePrincipalName or UserName. This change allows users to configure alerts with a specific run_as identity, consistent with how jobs and pipelines handle run_as.

Tests

• Updated TestRunAsWorksForAllowedResources to include an alert resource
• Added alerts to the allowList in TestRunAsErrorForUnsupportedResources
• Existing unit tests pass

[github-actions]

An authorized user can trigger integration tests manually by following the instructions below:

Trigger:
go/deco-tests-run/cli

Inputs:

• PR number: 4360
• Commit SHA: acd3520b6a5e6b7b42f5cd1c44dfe1b943977b10

Checks will be approved automatically on success.