coreaudio-encoder: Use canonical format enum instead of bitwise or

The enum members being getting the bitwise or here are from different
enums, and bitwise operations on members from different enums are
deprecated in C++20. kAudioFormatFlagsNativeFloatPacked is the
equivalent value (see its defintion), but removes the manual bitwise or.
This commit is contained in:
Internal Server Error - Gitea: Git with a cup of tea
500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f