Use print instead of po in debuginfo path test

[fallofpheonix]

Fixes #156660

This fixes tests/debuginfo/path.rs failing on newer Apple LLDB versions.

Root cause:
Apple LLDB 2100 reports missing Rust language plugin support:

warning: po was unsuccessful, running p instead

As a result, po falls back to p, producing expanded output that no longer matches the existing lldb-check directives.

Changes:

• replace po with print
• relax lldb-check expectations using [...]
• preserve validation of the displayed path value

This also aligns path.rs with the rest of the debuginfo tests, as it appears to be the only test using po.

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[fallofpheonix]

Reproduced on Apple LLDB 2100.

po falls back to p because LLDB reports missing Rust language plugin support. path.rs appears to be the only debuginfo test using po.

Submitted a PR replacing po with print and relaxing the checks.

[Copilot]

Pull request overview

Updates a Rust debuginfo LLDB test to be compatible with newer Apple LLDB versions where po can fail/fallback and change output formatting, causing lldb-check mismatches.

Changes:

• Remove lldb-command:po usage from tests/debuginfo/path.rs.
• Relax lldb-check patterns to tolerate expanded/variant LLDB output while still matching the "/some/path" value.

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