Fix copying subabilities to no longer duplicate them (#11399)

* Fix Subability copy bug (fix #10526 )

* Cards which copy abilities of other cards should not copy subabilities.

* Enable previously-failing tests

* Find more addAbility that should be done without subabilities

* Add documentation to addAbility function

* Add warning about not using basic addAbility when copying from a source

* Invert withSubabilities to fromExistingObject

Mage.Tests/src/test/java/org/mage/test/cards/abilities/keywords/SquadTest.java

@@ -198,9 +198,7 @@ public class SquadTest extends CardTestPlayerBase {
     }
 
     // The squad status is a copiable value of the spell, and should be carried over on copy.
-    @Ignore
     @Test
-    //TODO: Enable after fixing subability copying twice bug
     public void test_CopyingSpellMustKeepSquadStatus() {
 
         addCard(Zone.HAND, playerA, flagellant, 1);

Mage.Tests/src/test/java/org/mage/test/cards/copy/CopyPermanentSpellTest.java

@@ -80,7 +80,6 @@ public class CopyPermanentSpellTest extends CardTestPlayerBase {
         assertPermanentCount(playerA, "Dead Weight", 2);
     }
 
-    @Ignore // currently fails
     @Test
     public void testKickerTrigger() {
         makeTester();
@@ -98,7 +97,6 @@ public class CopyPermanentSpellTest extends CardTestPlayerBase {
         assertPowerToughness(playerA, "Grizzly Bears", 4, 2);
     }
 
-    @Ignore // currently fails
     @Test
     public void testKickerReplacement() {
         makeTester();