Handle UNC paths in Node DevTools links

[landeqiming666]

Summary

• Builds on Fix DevTools links for Node module stack frames #8352 by @apples-kksk while retaining their original commit.
• Handles POSIX, Windows drive, and UNC filesystem paths before generic URL parsing.
• Extends the Issue4269 browser fixture with a path containing spaces and verifies percent encoding.

Fixes #4269

Validation

• git diff --check
• git apply -p0 --check patch/patches/devtools.patch against DevTools frontend revision 6efd6eb1d85fd67fdcc2385c54fa56c524bec3f7
• Focused Node.js checks for POSIX, Windows drive, UNC, and regular URL inputs

The full NW.js browser test was not run locally because it requires a Chromium/NW.js out build.

[landeqiming666]

Hi, a brief follow-up on this PR. It remains clean and mergeable and keeps the fix scoped to UNC path handling in Node DevTools links, with regression coverage for the affected path forms. Happy to make any adjustments.