`Code` mobject does not support ligatures

Nobody has claimed this yet.

## Description of bug / unexpected behavior

I'm working with Code mobject. I was getting started with this [https://docs.manim.community/en/stable/reference/manim.mobject.text.code_mobject.Code.html#codefromstring](example) and I found this.

When I add line `print("Hello World")`, it works fine. But when I add `print(1<2)` or `print("Hello World", 1<2)`, an error occur.

I'm not sure it happened with other `language` or not.

```python
from manim import *

class CodeFromString(Scene):
def construct(self):
code = """from manim import Scene, Square

class FadeInSquare(Scene):
def construct(self):
print(1<=2)
s = Square()
self.play(FadeIn(s))
self.play(s.animate.scale(2))
self.wait()
"""
rendered_code = Code(
code=code,
tab_width=4,
background="window",
language="Python",
font="FiraCode Nerd Font",
)
self.play(Create(rendered_code))

```

## Logs

```
IndexError: list index out of range
```

And btw, what would be nice if you teach me how to apply `fontLigasture` when render

Start with the Code mobject and the linked CodeFromString documentation example, then reproduce the IndexError using the supplied Python snippet with `print(1<=2)`. Trace the code-rendering path to determine why ligatures or comparison operators exceed the available glyph data. Done means the example renders without IndexError and the expected font-ligature behavior is documented or supported.

Written by the indexing model from the issue text.