[clang] [LifetimeSafety] resolved lifetimeBound violation in constructor (PR #204797)

[Utkarsh Saxena via cfe-commits]

================
@@ -135,7 +135,10 @@ class LifetimeChecker {
         return;
       if (PVD->hasAttr<LifetimeBoundAttr>()) {
         // Track that this lifetimebound parameter correctly escapes.
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usx95 wrote:

Please update the documentation:
```
// Track that this lifetimebound parameter correctly escapes
// (via return or via field assignment in a constructor).
```

https://github.com/llvm/llvm-project/pull/204797