fix: Fix incorrect predicate pushdown for predicates referring to right-join key columns

[nameexhaustion]

• Fixes Filtering on duplicate columns after lazy right-join giving incorrect results #21142

Non-suffixed columns were incorrectly identified as belonging to the RHS table due to using check_input_node(predicate.node(), &schema_right, expr_arena) (which incorrectly matches to the non-suffixed column on the RHS before join). We now use ExprOrigin to correctly identify this.

This PR also improves predicate pushdown for predicates referring only to RHS columns in right-joins:

Before

FILTER col("values_right").is_null() FROM
  RIGHT JOIN:
  LEFT PLAN ON: [col("key")]
    DF ["key", "values"]; PROJECT */2 COLUMNS
  RIGHT PLAN ON: [col("key")]
    DF ["key", "values"]; PROJECT */2 COLUMNS
  END RIGHT JOIN

After

RIGHT JOIN:
LEFT PLAN ON: [col("key")]
  DF ["key", "values"]; PROJECT */2 COLUMNS
RIGHT PLAN ON: [col("key")]
  FILTER col("values").is_null() FROM
    DF ["key", "values"]; PROJECT */2 COLUMNS
END RIGHT JOIN

[codecov]

Codecov Report

Attention: Patch coverage is 94.06780% with 7 lines in your changes missing coverage. Please review.

Project coverage is 79.89%. Comparing base (5e51218) to head (4c3155b).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...lan/src/plans/optimizer/predicate_pushdown/join.rs	87.50%	4 Missing ⚠️
...ates/polars-plan/src/plans/optimizer/join_utils.rs	96.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #21293      +/-   ##
==========================================
+ Coverage   79.82%   79.89%   +0.06%     
==========================================
  Files        1596     1596              
  Lines      228565   228574       +9     
  Branches     2608     2608              
==========================================
+ Hits       182462   182622     +160     
+ Misses      45507    45356     -151     
  Partials      596      596              

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[nameexhaustion]

Code moved to join_utils below for re-use

[nameexhaustion]

Simplified to use BitOr