[GH] (texera/main): Workflow run "Running Copilot Code Review" failed!

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The GitHub Actions job "Running Copilot Code Review" on texera.git/main has failed.
Run started by GitHub user Copilot (triggered by Copilot).

Head commit for run:
874499fb167ce518657b6a734a62253ce17b5bc8 / Matthew B. <mg...@uci.edu>
test(frontend): add tests for WorkflowComputingUnitManagingService (#6469)

### What changes were proposed in this PR?
- Adds workflow-computing-unit-managing.service.spec.ts covering
WorkflowComputingUnitManagingService; no production code changed.
- Verifies the create, terminate, list and rename endpoints (methods,
bodies, URI encoding).
- Covers resource-JSON parsing: valid string, malformed fallback, and
already-parsed object.
### Any related issues, documentation, discussions?
Closes: #6457
### How was this PR tested?
- Run `cd frontend && npx nx test gui
--include="**/workflow-computing-unit-managing.service.spec.ts"`, expect
10 passed.
- Full frontend suite runs in CI via `yarn test:ci`, selected by the
auto-applied `frontend` label.
### Was this PR authored or co-authored using generative AI tooling?
Co-authored with Claude Opus 4.8 in compliance with ASF

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