[wip] - Reinstate `Annotator` instances to main libs #18243

Job	Run time
fourmolu	45s
build (9.6.7, ubuntu-latest)	5m 42s
Check branch history	17s
cabal-format	5s
build (9.8.4, ubuntu-latest)	5m 44s
gen-hie	5m 42s
build (9.10.2, ubuntu-latest)	5m 42s
build (9.12.2, ubuntu-latest)	5m 44s
Check if formal-ledger-specifications SRP is valid	9s
codegen	1s
${{ matrix.package }}-${{ matrix.ghc }}-${{ matrix.os }}	1s
Tests completed	1s
Send a slack notification on \#ledger-internal if the nightly build failed	1s
	29m 54s

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