gen4 planner: allow last_insert_id with arguments

[systay]

Description

We (incorrectly) decided to disallow last_insert_id some time ago, although it was actually working and being used.

Related Issue(s)

Fixed #13020

Checklist

• "Backport to:" labels have been added if this change should be back-ported
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on the CI
• Documentation was added or is not required

[vitess-bot]

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[arthurschreiber]

This supersedes #12997.

[harshit-gangal]

nit: this check can be moved down. if the function is present in funcRewrites

[vitess-bot]

I was unable to backport this Pull Request to the following branches: release-14.0, release-15.0, release-16.0.