[taglib] Fix WASM build by patching out wchar_t check

[fwcd]

Fixes #37104

This fixes the WASM build by patching out the wchar_t size check when targeting WASM/Emscripten. From what I have read, wchar_t defaults to 32-bit when targeting Emscripten and uses 16-bit even when -fshort-wchar is set, both of which should be enough for a UTF-16 code unit, which is presumably what this check verifies.

Feel free to suggest better solutions, since this feels a bit hacky, even if it works.

• Changes comply with the maintainer guide.
• SHA512s are updated for each updated download.
• The "supports" clause reflects platforms that may be fixed by this new version.
• Any fixed CI baseline entries are removed from that file.
• Any patches that are no longer applied are deleted from the port's directory.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is added to each modified port's versions file.

[jimwang118]

Usage test pass with following triplets:

x64-linux

[dg0yt]

Isn't there a cache variable which could have been passed as an OPTION?