It is part of the sync from the Gutenberg plugin that introduces the registry for block binding sources required for the new Block Bindings API: WordPress/gutenberg#54536.
See #60282.
Follow-up [57373].
Props czapla, artemiosans, santosguillamot, sc0ttkclark, lgladdy, talldanwp, swissspidy, youknowriad, fabiankaegy, mukesh27.
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