[Media TTT] Split up the media sender and receiver loggers.

There were already a few sender-specific log methods in the common
class, and more will be added so it's better to split them up.

Bug: 265455911
Test: manual: Verified `MediaTttSender` and `MediaTttReceiver` logs
still appear.
Test: atest com.android.systemui.media.taptotransfer

Change-Id: I97ff8e60b63f7b460dcfcba72bfcf6b2f2d02952