Refactor: private fields and performance tweaks (#9625)

1a. Make `costs`, `manaCosts`, and `manaCostsToPay` private in `AbilityImpl` with access through getters/setters 
1b. fix cost adjuster for imprinted cards affected by the above

2a. Lazy instantiation for rarely used `data` field in `TargetPointerImpl`

3a. Pre-allocate certain array sizes in `Modes` and `CostsImpl`

4a. Make `manaTemplate` private in `BasicManaEffect`, copy when passing outside the class 
4b. Don't copy `manaTemplate` in copy constructor since it doesn't change 
4c. Add comments explaining copy usage for `manaTemplate` 
4d. Remove redundant variable assignment and make fields final 

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Co-authored-by: xenohedron <xenohedron@users.noreply.github.com>

Mage/src/main/java/mage/abilities/effects/ContinuousEffectImpl.java

@@ -129,13 +129,6 @@ public abstract class ContinuousEffectImpl extends EffectImpl implements Continu
         this.order = order;
     }
 
-    @Override
-    public void newId() {
-        if (!(this instanceof MageSingleton)) {
-            this.id = UUID.randomUUID();
-        }
-    }
-
     @Override
     public boolean hasLayer(Layer layer) {
         return this.layer == layer;