[xlcore][fix] Allow new versions of patched proton wine to work. Improve compatibility with unpatched wine.

[rankynbass]

Currently, if using newer patched proton wine, or unpatched wine, the UnixDalamudRunner will return a null value for the ffxiv process, which prevents xlcore from properly closing when the game exits. This patch fixes that problem.

This patch makes three changes:

1. It skips up to two errors from the Dalamud process injector. Proton-based wine sometimes throws a meaningless error here, as does the ReShade Effects Shader Toggler (REST).
2. It reworks the try/catch logic so that we can try to find the ffxiv process even if Dalamud has errors.
3. It provides a fallback method to find the process id if wine is unpatched. This method should work 100% of the time in a flatpak container. Outside of a flatpak, it will only (possibly) fail if the user tries to launch two instances of the game at once.

A modified version of this patch is included in the Compatibility Rework 2 (PR #1366).