fix: pass args by calling animate that borrowed from CE

manimlib/mobject/mobject.py

@@ -2017,6 +2017,7 @@ class _AnimationBuilder:
         self.is_chaining = False
         self.methods: list[Callable] = []
         self.anim_args = {}
+        self.can_pass_args = True
 
     def __getattr__(self, method_name: str):
         method = getattr(self.mobject.target, method_name)
@@ -2041,6 +2042,9 @@ class _AnimationBuilder:
         self.is_chaining = True
         return update_target
 
+    def __call__(self, **kwargs):
+        return self.set_anim_args(**kwargs)
+
     def set_anim_args(self, **kwargs):
         '''
         You can change the args of :class:`~manimlib.animation.transform.Transform`, such as
@@ -2054,7 +2058,15 @@ class _AnimationBuilder:
 
         and so on.
         '''
+
+        if not self.can_pass_args:
+            raise ValueError(
+                "Animation arguments can only be passed by calling ``animate`` "
+                "or ``set_anim_args`` and can only be passed once",
+            )
+
         self.anim_args = kwargs
+        self.can_pass_args = False
         return self
 
     def build(self):