Improve watch performance.

[brendandburns]

FIxes #1961

This is a port of #780 to the 1.x release branch.

cc @mstruebing

[mstruebing]

I've ran prettier for you, this should make CI pass 🤞

[mstruebing]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: brendandburns, mstruebing

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[brendandburns]

Thanks for fixing the formatting! Somewhere along the line, our git hooks stopped working (at least in my environment) we should look into that :)

[mstruebing]

Here you go:

• chore: run format as pre-commit hook #2006
• chore: run format as pre-commit hook #2007