Switch `AlonzoTxAuxData` to use `NativeScript` #19707

Job	Run time
build (9.6.7, ubuntu-latest)	2m 8s
build (9.10.2, ubuntu-latest)	2m 12s
fourmolu	40s
build (9.12.2, ubuntu-latest)	2m 11s
shellcheck	6s
cabal-format	7s
build (9.8.4, ubuntu-latest)	2m 9s
Check branch history	12s
Check if formal-ledger-specifications SRP is valid	32s
gen-hie	1m 59s
Check that there are no additions of `undefined`s in the PR diff	14s
Tests completed	2s
codegen	1s
${{ matrix.package }}-${{ matrix.ghc }}-${{ matrix.os }}	1s
Send a slack notification on \#ledger-internal if the nightly build failed	1s
	12m 35s

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