Make CommandSourceStack respect hidden players

[notTamion]

fixes #11545

[lynxplay]

We have this diff already

Paper/patches/server/0988-Fix-entity-type-tags-suggestions-in-selectors.patch

Lines 80 to 92 in 85c870e

	+ // Paper start - tell clients to ask server for suggestions for EntityArguments
	+ final Collection<String> collection;
	+ if (icompletionprovider instanceof CommandSourceStack commandSourceStack && commandSourceStack.getEntity() instanceof ServerPlayer sourcePlayer) {
	+ collection = new java.util.ArrayList<>();
	+ for (final ServerPlayer player : commandSourceStack.getServer().getPlayerList().getPlayers()) {
	+ if (sourcePlayer.getBukkitEntity().canSee(player.getBukkitEntity())) {
	+ collection.add(player.getGameProfile().getName());
	+ }
	+ }
	+ } else {
	+ collection = icompletionprovider.getOnlinePlayerNames();
	+ }
	+ // Paper end - tell clients to ask server for suggestions for EntityArguments

Either we remove this or duplicate it.
Idk what else calls this method and if that is of interest to maybe not solve as deep.

[notTamion]

its only called by argument types so i think fixing this that deep is the correct solution.

[lynxplay]

Okay, thanks for the quick check 👍