dataengines/mpris2: tolerate non-standards compliant players like mpris-proxy
BlueZ mpris-proxy doesn't provide "SupportedUriSchemes" or "SupportedMimeTypes". Since the two properties are not directly used in the media controller widget, show a debug message instead of rejecting the player.
BUG: 466288 FIXED-IN: 5.27.3
Downstream patch: https://lore.kernel.org/linux-bluetooth/20230305170551.2572-1-qydwhotmail@gmail.com/
Edited by Fushan Wen