[Core/Group] SendTargetIconList fix

[3nei]

[Core/Group] SendTargetIconList fix

• TargetIcons should be send to new party/raid members ( as RaidMarkers do now )
• TargetIcons should be send to logged in party/raid members ( as RaidMarkers do now )

to test PR:

• create party/raid ( 2 players minimum )
• mark targets with TargetIcons
• invite 3rd player to party/raid
• this player will receive TargetIcons

https://youtu.be/_3orpm96yH4