[LowerMatrixIntrinsics][NewPM] Fix PreservedAnalyses result

PreservedCFGCheckerInstrumentation was saying that LowerMatrixIntrinsics
didn't properly preserve CFG even though it claimed to. The legacy pass
says it doesn't. Match the legacy pass's preserved analyses.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D89175