[clang] [clang-format] Correctly annotate C# UTF 8 string literals (PR #211919)

[via cfe-commits]

================
@@ -4569,6 +4569,19 @@ TEST_F(TokenAnnotatorTest, AttributeSquares) {
   EXPECT_TRUE(Tokens[15]->EndsCppAttributeGroup);
 }
 
+TEST_F(TokenAnnotatorTest, CSharpUtf8StringLiterals) {
+  const auto Style = getGoogleStyle(FormatStyle::LK_CSharp);
----------------
owenca wrote:

```suggestion
  const auto Style = getLLVMStyle(FormatStyle::LK_CSharp);
```

https://github.com/llvm/llvm-project/pull/211919