Resolve old_path in uvwasi_path_symlink()

[lum1n0us]

• add test-symlink-outbox

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fix #299

[lum1n0us]

@ospencer Hi, sorry to bother you. I'm not sure if you are able to approve and/or merge this PR, but you are my only contact related to uvwasi. I hope you can help review this PR and possibly approve and merge it. Thanks a lot.

[cjihrig]

@lum1n0us the CI is failing.

[lum1n0us]

I've fixed the unused variables errors in uvwasi CI / ubuntu-latest - debug-log. The other two seem related to infrastructure.

From Build Fuzzers(address). https://github.com/nodejs/uvwasi/actions/runs/15101901324/job/43082367465?pr=303

#9 243.0 E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/f/file/libmagic-mgc_5.38-4_amd64.deb  Connection failed [IP: 185.125.190.83 80]
#9 243.0 E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
#9 243.0 Fetched 1304 kB in 1min 58s (11.0 kB/s)
#9 ERROR: process "/bin/sh -c apt-get update && apt-get install -y make autoconf automake libtool" did not complete successfully: exit code: 100
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 > [2/6] RUN apt-get update && apt-get install -y make autoconf automake libtool:
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process "/bin/sh -c apt-get update && apt-get install -y make autoconf automake libtool" did not complete successfully: exit code: 100
2025-05-29 00:25:51,[239](https://github.com/nodejs/uvwasi/actions/runs/15101901324/job/43082367465?pr=303#step:4:240) - helper - ERROR - Docker build failed.
2025-05-29 00:25:51,239 - root - ERROR - Failed to build external project.
2025-05-29 00:25:51,239 - root - ERROR - Error building fuzzers for (commit: 323b7a2b34f0f2a2e21aa684c94dd272885dca95, pr_ref: refs/pull/303/merge).

AND. From Test Coverage. https://github.com/nodejs/uvwasi/actions/runs/15101901326/job/43082367566?pr=303

Finished .info-file creation
genhtml: WARNING: Use of uninitialized value in subroutine entry
genhtml: ERROR: unable to open /cmd_line: Permission denied

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BTW, Is there a way I can re-run the CI or trigger it without bothering you?

[cjihrig]

Is there a way I can re-run the CI or trigger it without bothering you?

It might work on future PRs now that you're no longer a first time contributor.