[clang] [analyzer] Fix a crash from element region construction during `ArrayInitLoopExpr` analysis (PR #113570)

[Balazs Benics via cfe-commits]

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@@ -330,3 +330,47 @@ void no_crash() {
 }
 
 } // namespace crash
+
+namespace array_subscript_initializer {
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steakhal wrote:

Could you please put these braces on the same line of the namespace/struct declarations? That way its slightly more compact.

https://github.com/llvm/llvm-project/pull/113570