tweak(eva): Enable more EVA events for observed players

[Stubbjax]

This change allows various EVA events (those following the same isLocallyViewed pattern) to be played for the currently observed player, along with a few messages and upgrade completion sound effects.

This includes the following events:

• EVA_BuildingBeingStolen
• EVA_BuildingSabotaged
• EVA_BuildingStolen
• EVA_BuldingLost [sic]
• EVA_CashStolen
• EVA_UnitLost
• EVA_UpgradeComplete
• EVA_VehicleStolen

And the following messages:

• DOZER:ConstructionComplete
• UPGRADE:UpgradeComplete

[Skyaero42]

This is nice

[xezon]

I think there is one more audio event at GeneralsMD\Code\GameEngine\Source\GameLogic\Object\Update\StealthUpdate.cpp(801)

[Stubbjax]

I think there is one more audio event at GeneralsMD\Code\GameEngine\Source\GameLogic\Object\Update\StealthUpdate.cpp(801)

I avoided that one for this change because it is unrelated to the EVA events. I also need to investigate why just that particular stealth sound (for clearing detected state) is conditional on the local player while none of the others are.