fix(rust): Fix str.to_integer panics for certain inputs

[math-hiyoko]

Description

This PR addresses an issue #22242 where calling str.to_integer() with strict=True unexpectedly panics for certain inputs.

The problem occurs because the values s and base at line 118 do not always correspond correctly, which leads to the bug. This PR modifies how some_failures is retrieved in original order so that s and base are properly paired, preventing the panic.

polars/crates/polars-ops/src/chunked_array/strings/namespace.rs

Lines 95 to 124 in 69ad1ba

	let some_failures = if ca.len() == 1 {
	ca.clone()
	} else {
	let all_failures = ca.filter(&failure_mask)?;
	all_failures.unique()?.slice(0, 10).sort(false)
	};
	let some_error_msg = match base.len() {
	1 => {
	// we can ensure that base is not null.
	let base = base.get(0).unwrap();
	some_failures
	.get(0)
	.and_then(|s| <i64 as Num>::from_str_radix(s, base).err())
	.map_or_else(
	|| unreachable!("failed to extract ParseIntError"),
	|e| format!("{}", e),
	)
	},
	_ => {
	let base_failures = base.filter(&failure_mask)?;
	some_failures
	.get(0)
	.zip(base_failures.get(0))
	.and_then(|(s, base)| <i64 as Num>::from_str_radix(s, base).err())
	.map_or_else(
	|| unreachable!("failed to extract ParseIntError"),
	|e| format!("{}", e),
	)
	},
	};

close #22242

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.77%. Comparing base (69ad1ba) to head (aef60d6).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #22243      +/-   ##
==========================================
- Coverage   80.78%   80.77%   -0.01%     
==========================================
  Files        1639     1639              
  Lines      235548   235549       +1     
  Branches     2714     2714              
==========================================
- Hits       190278   190270       -8     
- Misses      44630    44638       +8     
- Partials      640      641       +1     

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[math-hiyoko]

Can someone review this?
Although PR #22239 is almost finished, it’s necessary to merge this PR ahead of it.

[math-hiyoko]

I’ve made some minor adjustments; everything is ready now.