perf: Add dynamic predicates for TopK

[ritchie46]

No description provided.

[github-actions]

The uncompressed lib size after this PR is 52.6520 MB.

[github-actions]

The uncompressed lib size after this PR is 52.9606 MB.

[github-actions]

The uncompressed lib size after this PR is 53.2151 MB.

[github-actions]

The uncompressed lib size after this PR is 53.2149 MB.

[codecov]

Codecov Report

❌ Patch coverage is 84.31373% with 32 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.17%. Comparing base (7d83b12) to head (2fd47e2).
⚠️ Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/polars-stream/src/nodes/top_k.rs	83.65%	17 Missing ⚠️
.../src/plans/optimizer/predicate_pushdown/dynamic.rs	89.47%	6 Missing ⚠️
...s/polars-plan/src/plans/aexpr/function_expr/mod.rs	40.00%	3 Missing ⚠️
crates/polars-plan/src/plans/builder_ir.rs	0.00%	1 Missing ⚠️
.../polars-plan/src/plans/conversion/dsl_to_ir/mod.rs	0.00%	1 Missing ⚠️
crates/polars-plan/src/plans/ir/format.rs	75.00%	1 Missing ⚠️
crates/polars-plan/src/plans/optimizer/mod.rs	88.88%	1 Missing ⚠️
.../polars-python/src/lazyframe/visitor/expr_nodes.rs	0.00%	1 Missing ⚠️
...rates/polars-python/src/lazyframe/visitor/nodes.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main   #26495    +/-   ##
========================================
  Coverage   81.17%   81.17%            
========================================
  Files        1792     1793     +1     
  Lines      244511   244691   +180     
  Branches     3078     3078            
========================================
+ Hits       198475   198627   +152     
- Misses      45250    45278    +28     
  Partials      786      786            

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