Reworking triggered ability text generation to allow for ability words and flavor words to be added more easily (#8010)

* refactor all instances of getRule in triggered abilities using new getTriggerPrefix method

* updated triggered ability rules generation

* renamed method

* fixed a test failure

* some more refactoring

* simplified some instances of ability word usage

Mage/src/main/java/mage/abilities/common/DealsCombatDamageToAPlayerTriggeredAbility.java

@@ -93,12 +93,16 @@ public class DealsCombatDamageToAPlayerTriggeredAbility extends TriggeredAbility
     @Override
     public String getRule() {
         if (text == null || text.isEmpty()) {
-            return "Whenever {this} deals combat damage to "
-                    + (onlyOpponents ? "an opponent" : "a player")
-                    + (orPlaneswalker ? " or planeswalker" : "")
-                    + ", " + super.getRule();
+            return super.getRule();
         }
         return text;
     }
 
+    @Override
+    public String getTriggerPhrase() {
+        return "Whenever {this} deals combat damage to "
+                + (onlyOpponents ? "an opponent" : "a player")
+                + (orPlaneswalker ? " or planeswalker" : "")
+                + ", ";
+    }
 }