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

[Richard Smith via cfe-commits]

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@@ -10698,7 +10698,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td><a href="https://cplusplus.github.io/CWG/issues/1815.html">1815</a></td>
     <td>CD4</td>
     <td>Lifetime extension in aggregate initialization</td>
-    <td class="none" align="center">No</td>
+    <td class="full" align="center">Clang 19</td>
----------------
zygoloid wrote:

```suggestion
    <td class="unreleased" align="center">Clang 19</td>
```
We use a different CSS class here for features that haven't been in an official release yet.

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