[iOS][non-icu] HybridGlobalization code refactoring #94162

• Maintain consistency instead of using below implementations

  #if TARGET_MACCATALYST || TARGET_IOS || TARGET_TVOS
      if (Hybrid)
      {
          HybridImplementation
      }
      else
      {
          NotHybridImplementation
      }
  #else
      NotHybridImplementation
  #endif
  

  #if TARGET_MACCATALYST || TARGET_IOS || TARGET_TVOS
      if (Hybrid)
      {
          HybridImplementation
      }
  #endif
      NotHybridImplementation
  

  Use below code , this avoids duplicating the NotHybridImplementation logic.

  #if TARGET_MACCATALYST || TARGET_IOS || TARGET_TVOS
      if (Hybrid)
      {
          HybridImplementation
      }
      else
  #endif
      {
          NotHybridImplementation
      }
  

• Rename IsHybridGlobalizationOnOSX to IsHybridGlobalizationOniOS https://github.com/dotnet/runtime/blob/main/src/libraries/Common/tests/TestUtilities/System/PlatformDetection.cs#L369 implemented by [iOS][non-icu] HybridGlobalization clean up the code #96974

Contributes to #80689