Add workflow deletion signal

[MarceloRGonc]

Part of OPS-3195

Additional notes

• Add a cache-based mechanism to detect workflow deletion requests and stop workflow executions early.
• Add helpers to signal and detect workflow deletion using a cache key (workflow:deleted:)
• This ensures in-progress and future runs don’t continue executing after a workflow deletion is requested, avoiding wasted work and inconsistent state.

[linear]

OPS-3195 An attempt was made to access a run that could not be found in the database.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud