[Clang] fix range calculation for conditionals with throw expressions (#112081)

Fixes #111854

---

The issue arises when `GetExprRange` encounters a `ConditionalOperator`
with a `CXXThrowExpr`

```md
ConditionalOperator 0x1108658e0 'int'
|-CXXBoolLiteralExpr 0x110865878 '_Bool' true
|-CXXThrowExpr 0x1108658a8 'void'
| `-IntegerLiteral 0x110865888 'int' 0
`-IntegerLiteral 0x1108658c0 'int' 0
```


https://github.com/llvm/llvm-project/blob/ed3d05178274890fb804f43ae1bcdfd33b5fd8f0/clang/lib/Sema/SemaChecking.cpp#L9628-L9631

The current behavior causes the `GetExprRange` to proceed with the throw
expression (`CO->getTrueExpr()`/`void` type)

Author: a-tarasyuk

clang/docs/ReleaseNotes.rst

@@ -571,7 +571,8 @@ Bug Fixes to C++ Support
 - Clang incorrectly considered a class with an anonymous union member to not be
   const-default-constructible even if a union member has a default member initializer.
   (#GH95854).
-- Fixed an assertion failure when evaluating an invalid expression in an array initializer (#GH112140)
+- Fixed an assertion failure when evaluating an invalid expression in an array initializer. (#GH112140)
+- Fixed an assertion failure in range calculations for conditional throw expressions. (#GH111854)
 
 Bug Fixes to AST Handling
 ^^^^^^^^^^^^^^^^^^^^^^^^^