[clang] [clang][AST] Remove HasFirstArg assertion in CallExpr::getBeginLoc() (PR #130725)

[via cfe-commits]

https://github.com/cor3ntin commented:

Missing changelog.

Otherwise, I think it makes sense even if I sort of hate it, as it relies on `TryCopyInitialization` looking at the location and nothing else.

I wonder if we could get rid of `CallExpr::CreateTemporary` and instead
create something like an `OpaqueValueExpr` for the purpose of determining an initialization sequence.

(We should only need some expression with a type, a location, and a value category, afaik)


https://github.com/llvm/llvm-project/pull/130725