Fixed :class:.Axes scaling for :meth:.plot_implicit_curve

[JinchuLi2002]

Closes #3145

Overview

Initially, calling plot_implicit_curve() on a CoordinateSystem whose axes were scaled would have no effect, as if the axes hadn't been scaled at all. This PR fixed it by applying the scalings when creating ImplicitFunction object under plot_implicit_curve()

Further Information and Comments

Test code:

from manim import *


class Test(Scene):
    def construct(self):
        numberplane = NumberPlane(
            axis_config=dict(
                scaling=LinearBase(scale_factor=0.5),
                decimal_number_config=dict(
                    num_decimal_places=1,
                ),
            ),
        ).add_coordinates()

        unit_circle = numberplane.plot_implicit_curve(
            lambda x, y: (x) ** 2 + (y) ** 2 - 1, color=BLUE
        )

        self.add(numberplane, unit_circle)

Original output (incorrect):

New output:

Reviewer Checklist

• The PR title is descriptive enough for the changelog, and the PR is labeled correctly
• If applicable: newly added non-private functions and classes have a docstring including a short summary and a PARAMETERS section
• If applicable: newly added functions and classes are tested

[behackl]

This seems fine to me, thanks for the fix!