"Path" sanitization does not strip paths for native code

Profile: https://share.firefox.dev/3GitZfj

This profile contains filenames on C++ functions, for example `/Users/mstange/code/mozilla/modules/zlib/src/deflate.c`. This path has my username in it.

Steps to reproduce:

1. Click (Re-)Upload.
1. Check all checkboxes _except_ "Include resource URLs and paths"

Expected results:
The path with my username should not be part of the sanitized profile.

Actual results:
The path is still there.

┆Issue is synchronized with this [Jira Task](https://mozilla-hub.atlassian.net/browse/FP-471)