bring _typecheck_input() to Write directly and add comment

Author: irvanalhaq9

manim/animation/creation.py

@@ -344,6 +344,7 @@ def __init__(
         reverse: bool = False,
         **kwargs,
     ) -> None:
+        self._typecheck_input(vmobject)
         run_time: float | None = kwargs.pop("run_time", None)
         lag_ratio: float | None = kwargs.pop("lag_ratio", None)
         run_time, lag_ratio = self._set_default_config_from_length(
@@ -387,6 +388,7 @@ def _adjust_stroke_width_for_text(
         if stroke_width is not None:
             return stroke_width
         if vmobject.height != 0:
+            # if the height is zero, accessing font_size causes ZeroDivisionError
             font_size = getattr(vmobject, "font_size", DEFAULT_FONT_SIZE)
             if font_size < 20 or font_size > 6 * DEFAULT_FONT_SIZE:
                 # Assuming the user is using MovingCameraScene and performing a zoom-in or zoom-out