[llvm] [AArch64][SDAG] Enable +sme2p2/+sve2p2 lowering for compressstore (PR #218624)

[Jack Styles via llvm-commits]

Stylie777 wrote:

This is a continuation of #217609 after the stack there got mixed up and merging the previous stacked PR closed the following one.

https://github.com/llvm/llvm-project/pull/218624