MC-88491: Fix projectile colliding with shooter

In some situations, a projectile made collide with the entity that shot
it. This occurs because the game sets the ignored entity incorrectly.
Our fix is to ensure that the shooter is the only entity that gets
ignored by the projectile.

By: Zach Brown <zach.brown@destroystokyo.com>

paper-server/nms-patches/EntityProjectile.patch

@@ -8,6 +8,15 @@
      }
  
      protected void i() {}
+@@ -127,7 +128,7 @@
+             if (entity1.isInteractable()) {
+                 if (entity1 == this.c) {
+                     flag = true;
+-                } else if (this.shooter != null && this.ticksLived < 2 && this.c == null) {
++                } else if (this.shooter != null && this.ticksLived < 2 && this.c == null && this.shooter == entity1) { // CraftBukkit - MC-88491
+                     this.c = entity1;
+                     flag = true;
+                 } else {
 @@ -164,6 +165,11 @@
                  this.e(movingobjectposition.a());
              } else {