[llvm] [ARM][Codegen] Fix vector data miscompilation in arm32be (PR #105519)

[via llvm-commits]

Zhenhang1213 wrote:

> Did you manage to look into fixing PerformBITCASTCombine yet?

Logically, I understand that this change does not involve PerformBITCASTCombine function, right? 

https://github.com/llvm/llvm-project/pull/105519