Auto merge of #29733 - mukilan:workaround-gstreamer-dylib-issue, r=mrobinson

Workaround bug in gstreamer binaries

The official gstreamer .pkg distribution should contain 'relocatable' dylibs, but as discovered in #29732, some dylibs have absolute links to liblzma.5.dylib ("/usr/local/opt/xz/lib/liblzma.5.dylib")

Since /opt/homebrew is the default install location on Apple Silicion, this will cause the packaging & build steps to fail, even if 'xz' package is installed via homebrew.

This is a temporary fix until upstream fixes the bug and makes the package truly 'relocatable'. Users
with non-default homebrew prefixes will still have the issue.

Thanks to @atbrakhi  for helping me debug and test the patch on her mac.

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- [x] These changes fix #29732 (GitHub issue number if applicable)

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