fix[tool]: keep import search paths request-local

[DicksonWu654]

What I did

Allow InputBundle.load_file() to receive a call-local search-path sequence and use it without replacing InputBundle.search_paths. ImportAnalyzer now passes its absolute or relative resolution paths directly.

This preserves existing behavior for ordinary callers while making resolution deterministic when an input bundle is reused by overlapping callers.

How I did it

• added a keyword-only search_paths override to load_file()
• retained existing reverse-precedence behavior and default bundle paths
• removed ImportAnalyzer use of temporary_search_paths
• added synchronized regression coverage for two relative imports sharing one bundle

Tests

125 passed across the input-bundle tests and relevant interface/module import suites.

[chatgpt-codex-connector]

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-11T23:17:04.929858Z	aa434d9	PR opened

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[chatgpt-codex-connector]

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Reviewed commit: aa434d9906

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[chatgpt-codex-connector]

Make the top-level search path request-local too

When two CompilerData instances sharing a bundle compile entrypoints from different directories concurrently, CompilerData._resolve_imports still appends each entrypoint directory to the shared input_bundle.search_paths at vyper/compiler/phases.py:167, and each ImportAnalyzer snapshots that contaminated list. Consequently, this call-local override can still resolve an absolute import from the other request's higher-precedence directory; the overlapping context managers can also pop one another's paths. Pass the entrypoint directory into the analyzer without mutating the bundle so the initial absolute-search-path snapshot is request-local as well.

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