refactor(rust!): Move schema resolving to IR phase.

[ritchie46]

This will allow us to evaluate plans server-side. E.g. on a locations where the schema will be resolved.

[codspeed-hq]

CodSpeed Performance Report

Merging #15714 will not alter performance

_{Comparing schema (6267a88) with main (2db0ba6)}

Summary

✅ 22 untouched benchmarks

[ritchie46]

todo: cache rename schema
add (cached lp_arena, expr_arena, lp_top) node.

[codecov]

Codecov Report

Attention: Patch coverage is 93.59268% with 28 lines in your changes are missing coverage. Please review.

Project coverage is 81.34%. Comparing base (2db0ba6) to head (d50753e).

❗ Current head d50753e differs from pull request most recent head 6267a88. Consider uploading reports for the commit 6267a88 to get more accurate results

Files	Patch %	Lines
...ates/polars-plan/src/logical_plan/functions/dsl.rs	76.27%	14 Missing ⚠️
crates/polars-plan/src/logical_plan/schema.rs	62.50%	6 Missing ⚠️
...src/logical_plan/conversion/dsl_plan_to_ir_plan.rs	97.19%	5 Missing ⚠️
crates/polars-plan/src/dot.rs	0.00%	1 Missing ⚠️
crates/polars-plan/src/logical_plan/builder_dsl.rs	96.29%	1 Missing ⚠️
...tes/polars-plan/src/logical_plan/conversion/mod.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15714      +/-   ##
==========================================
- Coverage   81.35%   81.34%   -0.01%     
==========================================
  Files        1377     1378       +1     
  Lines      176613   176515      -98     
  Branches     2544     2544              
==========================================
- Hits       143676   143584      -92     
+ Misses      32456    32449       -7     
- Partials      481      482       +1     

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