[clang] [Clang][CWG1815] Support lifetime extension of temporary created by aggregate initialization using a default member initializer (PR #87933)

[Erich Keane via cfe-commits]

erichkeane wrote:

I think we have enough evidence that we have to revert this, so I've done so in 224116ab9f4d97acb0cca76dc63c1d3d4a253078

@yronglin : Please submit a PR that includes the original patch + whatever it takes to fix the above issues.  Unfortunately reverts happen :/  But I definitely appreciate the work you're doing on this.

https://github.com/llvm/llvm-project/pull/87933