[clang] [clang][analyzer] Improve the modeling of insert in MismatchedIteratorChecker (PR #132596)

[Balazs Benics via cfe-commits]

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@@ -0,0 +1,12 @@
+// RUN: %clang_analyze_cc1 -analyzer-config aggressive-binary-operation-simplification=true -analyzer-checker=alpha.cplusplus.MismatchedIterator -analyzer-output text -verify %s
+
+// expected-no-diagnostics
+
+#include "Inputs/system-header-simulator-cxx.h"
+
+void f()
+{
+    std::list<int> l;
+    std::unordered_set<int> us;
+    us.insert(l.cbegin(), l.cend()); // no warning
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steakhal wrote:

Isn't this test covered by the other test?
Id say, let's drop this and keep the other.

https://github.com/llvm/llvm-project/pull/132596