Fix GetILToNativeMapping3 to return mappings for the specified code start address...

Fix GetILToNativeMapping3 to return mappings for the specified code start address (#16146)

Fix GetILToNativeMapping3 to return mappings for the specified code start address

Fix for https://github.com/dotnet/coreclr/issues/16145 in master:
- Previously, it was getting or creating the current entry point's corresponding DebugJitInfo and determining that the specified code address is not within the code range
- Fixed to get or create a DebugJitInfo corresponding to the specified code address and return that