kwok: fix base_name for shell completion

[chenrui333]

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[cho-m]

Should do the reverse and remove most base_name usage - Homebrew/brew#18942

e.g. #201871

[chenrui333]

yeah, that is a better idea.

[cho-m]

For kwok, either can wait for next bump PR or can rebuild bottle.

EDIT: Also, formulae that still need base_name are mainly the ones that use register-python-argcomplete (e.g. python-yq, commitizen, and azure-cli). If the number increase enough, can add logic to handle in brew.