fix: remove deprecated commonLabels

[chansuke]

Closes #5653

replace deprecated commonLabels with labels

the following files were intentionally unchanged:

• examples/transformerconfigs/README.md // the documentation of transformer
• site/content/ // API reference document
• examples/alphaTestExamples/helloapp.md // alpha test example
• examples/zh/ // Chinese translation (out of scope)
• test files that needed for backwards compatibility testing

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[sarab97]

/lgtm

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[koba1t]

Hi @chansuke

Thanks for your help!
I added one comment, please check that.

By the way, I think we're still using deprecated fields in our official docs.
Could you fix those too?
https://github.com/kubernetes-sigs/cli-experimental/tree/master/site

[chansuke]

@koba1t
Thank you so much for your review!! Yes, I will handle this too:)

[stormqueen1990]

/uncc

[koba1t]

Thanks for your work!
I've added a few more comments. Please check them.

[koba1t]

Looks like includeSelectors was removed from examples/helloWorld/kustomization.yaml.
Do you have any reason to still remain?

[koba1t]

same

[koba1t]

Same.

[koba1t]

This example modifies the behavior of commonLabels in the transformer configuration.
If you modify this section, also update the README.md to instruct users to configure the labels transformer accordingly.

If you don't know how to change the contents of this section, it's fine to keep it as is.