BarChart - y-axis labels/numbers cannot be suppressed

## Description of bug / unexpected behavior
When creating a BarChart()-mobject it is impossible to suppress the numbering on the y-axis. The numbers cannot even be removed cleanly afterwards.

## Expected behavior
I would have expected that the given options for the y-axis NumberLine() would be handled correctly, but they are not used in the initialization at all.

## How to reproduce the issue
Trying to use y_axis_config={"include_numbers": True} or y_axis_config={"include_numbers": False} doesn't make a big difference... But in the first case the labels are even created twice.

Code for reproducing the problem

```py
class histo(Scene):
def construct(self):
sample_list = [1,2,3,4,3,2,1]
num_bins=len(sample_list)
hist_list = list(np.histogram(sample_list, bins=4, density=True))
hist = BarChart(hist_list[0], bar_colors=[ORANGE],
axis_config={},
x_axis_config={"include_numbers": False},
y_axis_config={"include_numbers": True}
)
self.add(hist)
self.wait()
for i,obj in enumerate(hist.y_axis.numbers):
self.play(obj.animate.shift((0.3*i+.3)*LEFT))
self.remove(hist.y_axis.numbers[i])
self.wait(2)
```

## System specifications
Manim Community v0.16.0.post0
on Windows 10/Python 3.9.8 AND on Discord/Manimator

Start by tracing BarChart initialization and how y_axis_config is passed to the y-axis NumberLine. Verify the reproduced cases for include_numbers set to true and false, then confirm that labels are neither duplicated nor left visible when suppression is requested.

Written by the indexing model from the issue text.