[Bug] Escape should put player into SOS if owned. (#4388)

When you escape if you have the Shroud of Stealth bonus (AA, Spell, item) you will go straight into SOS mode.

zone/spell_effects.cpp

@@ -2329,6 +2329,12 @@ bool Mob::SpellEffect(Mob* caster, uint16 spell_id, float partial, int level_ove
 					if (IsClient()) {
 						int pre_aggro_count = CastToClient()->GetAggroCount();
 						entity_list.RemoveFromTargetsFadingMemories(this, true, max_level);
+
+						if (spellbonuses.ShroudofStealth || aabonuses.ShroudofStealth || itembonuses.ShroudofStealth) {
+							improved_hidden = true;
+							hidden = true;
+						}
+
 						SetInvisible(Invisibility::Invisible);
 						int post_aggro_count = CastToClient()->GetAggroCount();
 						if (RuleB(Spells, UseFadingMemoriesMaxLevel)) {