[heft] Improve logging by setting a task name on the task operation

[bartvandenende-wm]

Summary

Fixes #4467

Details

This PR fixes the heft console print New run requested by unknown task, that could be observed for incremental heft builds.

The expected behaviour is for heft to print the task name that triggered requestRun, for example New run requested by typescript. This improves the ability for teams to diagnose issues when unexpectedly re-builds are encountered.

The fix is passing an explicit name option when the task Operations is initialised.

How it was tested

Manually tested:

1. cd 'rushstack/build-tests-samples/heft-webpack-basic-tutorial'
2. rush build --to .
3. rushx start
4. Make a file change in the src folder
5. Observe the console print New run requested by typescript

Impacted documentation

N/A

[octogonz]

I've shared a possible alternative approach in a separate PR. See the issue #4467 discussion for details.

[bartvandenende-wm]

closing in favour of #4469