test: Run plan tests in end to end configuration

[systay]

Description

We’ve frequently encountered planner tests that assert faulty query plans, which would crash if executed directly on MySQL. This PR enhances testing by running these queries, with data, against both MySQL and Vitess, ensuring the results are consistent and correct across both systems.

Related Issue(s)

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• "Backport to:" labels have been added if this change should be back-ported to release branches
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[vitess-bot]

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[arthurschreiber]

Nice! This will be a great help in making sure we catch planner issues earlier. 👍