fix: Avoid penalizing Improved Heavy Lasers in weapon bays

While heavy lasers incur an accuracy penalty, this obviously isn't meant
to apply to improved heavy lasers, which are improved specifically by
avoiding that.

The check has also been made a bit more efficient.

megamek/src/megamek/common/actions/WeaponAttackAction.java

@@ -3838,8 +3838,7 @@ private static ToHitData compileAeroAttackerToHitMods(Game game, Entity ae, Targ
                 if (wtype.getAtClass() == WeaponType.CLASS_LASER) {
                     for (WeaponMounted bweap : weapon.getBayWeapons()) {
                         WeaponType bwtype = bweap.getType();
-                        if ((bwtype.getInternalName().contains("Heavy"))
-                                && (bwtype.getInternalName().contains("Laser"))) {
+                        if (bwtype.getInternalName().startsWith("CLHeavyLaser")) {
                             toHit.addModifier(+1, Messages.getString("WeaponAttackAction.HeavyLaserInBay"));
                             break;
                         }