[clang] [clang][DebugInfo] Revert to attaching DW_AT_const_value on static member declarations (PR #73626)

[Michael Buch via cfe-commits]

Michael137 wrote:

I do wonder how feasible it would be for the downstream tests to be adjusted to look at the `DW_AT_location`..

https://github.com/llvm/llvm-project/pull/73626