Fix Write() stroke width to scale with font_size or object scale

Author: irvanalhaq9

manim/animation/creation.py

@@ -85,7 +85,7 @@ def construct(self):
     from manim.mobject.text.text_mobject import Text
     from manim.scene.scene import Scene
 
-from manim.constants import DEFAULT_FONT_SIZE, RIGHT, TAU
+from manim.constants import DEFAULT_FONT_SIZE, DEFAULT_STROKE_WIDTH, RIGHT, TAU
 from manim.mobject.opengl.opengl_surface import OpenGLSurface
 from manim.mobject.opengl.opengl_vectorized_mobject import OpenGLVMobject
 from manim.utils.color import ManimColor
@@ -389,7 +389,7 @@ def _adjust_stroke_width_for_text(
         if not isinstance(vmobject, SVGMobject):
             return 2.0  # default in DrawBorderThenFill
         font_size = getattr(vmobject, "font_size", DEFAULT_FONT_SIZE)
-        return 2
+        return (font_size / DEFAULT_FONT_SIZE) * DEFAULT_STROKE_WIDTH * scale_factor
 
     def reverse_submobjects(self) -> None:
         self.mobject.invert(recursive=True)