Switch `AlonzoTxAuxData` to use `NativeScript` #19721

Job	Run time
gen-hie	7m 4s
build (9.6.7, ubuntu-latest)	18m 39s
Check branch history	12s
build (9.12.2, ubuntu-latest)	18m 42s
build (9.10.2, ubuntu-latest)	16m 31s
build (9.8.4, ubuntu-latest)	16m 7s
Check that there are no additions of `undefined`s in the PR diff	13s
fourmolu	40s
shellcheck	9s
cabal-format	5s
Check if formal-ledger-specifications SRP is valid	28s
Tests completed	3s
codegen	0s
${{ matrix.package }}-${{ matrix.ghc }}-${{ matrix.os }}	0s
Send a slack notification on \#ledger-internal if the nightly build failed	0s
	1h 18m 53s

Provide feedback