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/effects/Effects.java

@@ -110,8 +110,9 @@ public class Effects extends ArrayList<Effect> {
 
         // flavor word
         if (mode.getFlavorWord() != null) {
-            return "<i>" + mode.getFlavorWord() + "</i> &mdash; " + CardUtil.getTextWithFirstCharUpperCase(sbText.toString());
-        };
+            return CardUtil.italicizeWithEmDash(mode.getFlavorWord())
+                    + CardUtil.getTextWithFirstCharUpperCase(sbText.toString());
+        }
 
         return sbText.toString();
     }