QS Tile Icons: use Icon.res, ditch state.iconResId

This prevents icon.res and state.iconResId inconsistency and so prevents
redundant icon loading which improves performance.

Bug: 383761789
Flag: com.android.systemui.qs_new_tiles
Test: atest ModesTileTest
AirplaneModeMapperTest
AlarmTileMapperTest
BatterySaverTileMapperTest
ColorCorrectionTileMapperTest
FontScalingTileMapperTest
HearingDevicesTileMapperTest
InternetTileMapperTest
ColorInversionTileMapperTest
LocationTileMapperTest
ModesTileMapperTest
NightDisplayTileMapperTest
NotesTileMapperTest
QRCodeScannerTileMapperTest
QSTileViewModelImplTest
ReduceBrightColorsTileMapperTest
RotationLockTileMapperTest
DataSaverTileMapperTest
ScreenRecordTileMapperTest
SensorPrivacyToggleTileMapperTest
WorkModeTileMapperTest

Change-Id: I18b2b3c3a085f3bd5eb3ed445ef868d026162786