fix(cli): fix watch telemetry

[ansgarm]

Description

When we refactored watch to get rid of the GraphQL experiment, we accidentally removed the telemetry related things as
well

Checklist

• I have updated the PR title to match CDKTF's style
  guide
• I have run the linter on my code locally
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation if applicable
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works if applicable
• New and existing unit tests pass locally with my changes

[mutahhir]

SynthOrigin is a bit confusing as a name (I thought it was going to be referring to a hostname at some point), but it's a minor nit and I don't have a much better alternative (SynthCommand etc), so approving now.

[ansgarm]

Yeah, that was my past self that named it like that (it was still part of the Stack.synth() interface, so I kept it)

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