Description

This adds optional OSC 8 hyperlink support to stacktrace file paths in terminal output. This allows compatible terminals (Ghostty, iTerm, VS Code, etc.) to make file paths clickable even if they wrap or contain special characters.

• Links are enabled only when stdout is TTY
• Disabled in CI or when VITEST_FORCE_TTY=false
• Uses pathToFileURL for cross-platform support (handles Windows paths correctly)
• Reporter-only change (no runtime logic affected)

Resolves #9565

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Tests

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