LinearTransformationScene in v0.17.3: self.add_vector() breaks fixed objects

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## Description of bug / unexpected behavior
When using `self.add_vector()` to add a vector to a `LinearTransformationScene()` all mobjects on the scene become transformable mobjects.

See also [https://discord.com/channels/581738731934056449/1146895377841262725/1146895377841262725](https://discord.com/channels/581738731934056449/1146895377841262725/1146895377841262725)

## Expected behavior
Adding a vector should not change the behavior of other objects

## How to reproduce the issue
In `LinearTransformationSceneExample_01` an arrow is added using `self.add_vector()`, which results in also the `title` and `matrix_tex` being affected by the matrix operation. In `LinearTransformationSceneExample_02` the same arrow is manually added using `self.add_transformable_mobject()` and the other objects stay unaffected.

Code for reproducing the problem

```python
class LinearTransformationSceneExample_01(LinearTransformationScene):
def __init__(self):
LinearTransformationScene.__init__(
self,
show_coordinates=True,
leave_ghost_vectors=True,
)

def construct(self):
matrix = [[1/2, 0], [0, -1/2]]
matrix_tex = MathTex(r"\hat{S}_z = \begin{bmatrix} \frac{1}{2}\hbar & 0 \\ "
r"0 & -\frac{1}{2}\hbar \end{bmatrix}").to_edge(UL).add_background_rectangle()
self.add_foreground_mobject(matrix_tex)

self.add_vector([0.7071, 0.7071], color=BLUE)

self.add_title("Hello")
self.apply_matrix(matrix)
self.wait()
```
```python
class LinearTransformationSceneExample_02(LinearTransformationScene):
def __init__(self):
LinearTransformationScene.__init__(
self,
show_coordinates=True,
leave_ghost_vectors=True,
)

def construct(self):
matrix = [[1/2, 0], [0, -1/2]]
matrix_tex = MathTex(r"\hat{S}_z = \begin{bmatrix} \frac{1}{2}\hbar & 0 \\ "
r"0 & -\frac{1}{2}\hbar \end{bmatrix}").to_edge(UL).add_background_rectangle()
self.add_foreground_mobject(matrix_tex)

self.add_transformable_mobject(Vector([0.7071, 0.7071], color=BLUE))

self.add_title("Hello")
self.apply_matrix(matrix)
self.wait()
```

## Additional media files

Images/GIFs

`LinearTransformationSceneExample_01`
https://github.com/ManimCommunity/manim/assets/8582807/2db3067c-bd80-4892-ac49-4cf4af90123b

`LinearTransformationSceneExample_02`
https://github.com/ManimCommunity/manim/assets/8582807/c68d15a2-1b3d-4980-9856-e42db47fc2bf

## System specifications

System Details
- ManimCE v0.17.3 on Manimator/Discord and Windows 10

Start with LinearTransformationScene's add_vector and compare it with add_transformable_mobject, then trace how apply_matrix selects objects for transformation. Reproduce both LinearTransformationSceneExample cases and confirm that adding a vector leaves the title and matrix_tex unaffected while the vector is transformed.

Written by the indexing model from the issue text.