[release-18.0] In the same sqltypes.Type, Copy expression types to avoid weight_strings and derived tables (#15069)#15129

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systay merged 2 commits intovitessio:release-18.0from wangweicugw:backport-15069-to-release-18.0

Feb 5, 2024

+205-5

Commits on Feb 2, 2024

Cherry-pick ea8a90d with conflicts
vitess-bot[bot]
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Commits on Feb 5, 2024

[release-18.0] In the same sqltypes.Type, Copy expression types to avoid weight_strings and derived tables (vitessio#15069 )
wangweicugw
committed