Improved Compatibility Around LAST_INSERT_ID - evalengine

[systay]

Description

This PR improves last_insert_id(x) behavior to align more closely with MySQL in various scenarios.

Here we are adding capability for the evalengine to handle last_insert_id(x) queries in vtgate. This enables running dual only queries without having to send it down to mysql, such as:

select last_insert_id(123);

It also enables handling situations where the value is calculated in the vtgate and not something MySQL sends to us, like aggregation across shards:

select last_insert_id(count(*)) from user where foo = 'bar'

This PR contains commits from #17408

Related Issue(s)

Checklist

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

[vitess-bot]

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