Rust: Use hasImplementation in path resolution

[hvitved]

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[Copilot]

Pull Request Overview

This PR streamlines path resolution by delegating hasImplementation logic to the base implementation and updates test expectations accordingly.

• Removed custom hasImplementation overrides for ConstItemNode and FunctionItemNode in favor of super.hasImplementation().
• Adjusted expected test output to drop duplicate clone resolutions from lifetime.rs.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
rust/ql/lib/codeql/rust/internal/PathResolution.qll	Delegated hasImplementation for Const and Function nodes to the super.
rust/ql/test/query-tests/security/CWE-825/CONSISTENCY/PathResolutionConsistency.expected	Removed outdated expected entries for clone from library trait items.

Comments suppressed due to low confidence (2)

rust/ql/lib/codeql/rust/internal/PathResolution.qll:428

• Consider adding or updating test cases to validate that default trait implementations in library code are still correctly detected by hasImplementation now that the custom logic has been removed.

override predicate hasImplementation() { Const.super.hasImplementation() }

rust/ql/lib/codeql/rust/internal/PathResolution.qll:504

• Similarly, add tests for default implementations of trait functions to ensure hasImplementation still correctly reports library-sourced trait methods.

override predicate hasImplementation() { Function.super.hasImplementation() }

[redsun82]

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