ci(macos-amd64): flip checked-in gate from must-stay-broken to must-pass - #83

Process completed with exit code 1.

thirdparty/tcc/lib/libgc.a is not a well-formed archive (ar t failed) right after being rebuilt - this is a real regression in the bdwgc build, not the known tcc archive-parsing limitation.

Process completed with exit code 1.

Static libgc.a lane failed against the checked-in pair, but NOT with the known/expected summary (PASS crash, FAIL gc_alloc/hello with compile error) - this looks like a different, unexpected problem and should not be silently treated as the known XFAIL.

Process completed with exit code 1.

thirdparty/tcc/lib/libgc.dylib is not committed as a symlink - expected a symlink to a versioned file (e.g. libgc.1.dylib). A consumer checking out this exact commit would get a plain, dereferenced file instead of the real libtool-managed layout.