[SPARK-48598][PYTHON][CONNECT] Propagate cached schema in dataframe operations #46954
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What changes were proposed in this pull request?
Propagate cached schema in dataframe operations:
Why are the changes needed?
to avoid unnecessary RPCs if possible
Does this PR introduce any user-facing change?
No, optimization only
How was this patch tested?
added tests
Was this patch authored or co-authored using generative AI tooling?
No