[llvm] [Sanitizer] Use DK_OptimizationRemarkMissed for DiagnosticInfoInstrumentation. (PR #106356)

[via llvm-commits]

skc7 wrote:

@vitalybuka Is it required to extend DiagnosticKind enum for IR instrumentation or can we use the DK_OptimizationRemarkMissed?

https://github.com/llvm/llvm-project/pull/106356