Keep it concise but clear. Example: "set_color_by_gradient not working as expected in ManimGL"

[mathsvisualization]

Describe the bug

When I use the set_color_by_gradient function in ManimGL, the object does not get the expected gradient coloring. Instead, it either shows a single color or doesn't change color at all.

To Reproduce

Steps to reproduce the behavior:

1. Create a Text or VMobject.
2. Apply set_color_by_gradient with two or more colors.
3. Run the scene and observe the output.

Code:

from manim_imports_ext import *

class Factorial(InteractiveScene):
    def construct(self):
        self.embed()
        # Introduction  
        definition = Tex(
            R"\mathbb{R} \text{ecursive}\ \mathbb{D} \text{efinition of } \mathbb{F} \text{actorial}")
        definition.set_width(FRAME_WIDTH - 1)
        definition.set_color_by_gradient(BLUE_C, YELLOW)
        definition.move_to([0, 2.1, 0])
        self.add(definition)

### Environment
1. ManimGL Version: v1.7.0
2. Python Version: 3.12.3
3. OS: Ubuntu on Termux (Android)
![VideoCapture_20241023-143559](https://github.com/user-attachments/assets/4c858a6d-14d2-4594-b557-1e2e4e2a7ff0)
@3b1b 

[Varniex]

Hi, I can't reproduce the bug. I am getting the desired gradient effect. Make sure you have the updated packages.