CanvasItem::draw_ellipse() has mis-named 'major' and 'minor' parameters

### Tested versions

- Present in: 4.6.stable
- Not Applicable to versions prior to 4.6 (method(s) in question introduced in 4.6)

### System information

Godot v4.6.stable - macOS Sonoma (14.0.0) - Multi-window, 1 monitor - Metal (Forward+) - integrated Apple M1 (Apple7) - Apple M1 (8 threads) - 16.00 GiB memory

### Issue description

The `CanvasItem::draw_ellipse()` 2nd and 3rd parameters are named in the source code as `major` and `minor`, and described in the documentation as the "semi-major axis" and "semi-minor axis". However, how they are coded and how they behave are as the X-direction axis and the Y-direction axis.

In geometry, the major axis of an ellipse is its longest diameter. Correspondingly, the semi-major axis is the longest semidiameter; and, the minor is the shortest. e.g., both `draw_ellipse(..., 20, 10, ...)` and `draw_ellipse(..., 10, 20, ...)` draw an ellipse with a semi-major axis of 20. The first has its major axis in the X-direction ("squashed") and the second has its major axis in the Y-direction ("tall").

Thus, the parameter names would be better as something like "x_axis" and "y_axis", or similar.

Throughout its API, Godot (naturally) relies on knowledge, references, concepts, and metaphors from geometry. People approaching `draw_ellipse()` with a background in geometry will be misled by both the parameter names and how they are described in the API documentation. People approaching geometry with a background in working in Godot will be mistaken about what a 'major' and 'minor' axis of an ellipse are.

(This same observation applies to `draw_ellipse_arc()`, and to corresponding methods in `RenderServer`, and anywhere else that is tightly associated with these `CanvasItem` methods.)

### Steps to reproduce

On a 500x500 `Control`, issue the drawing commands:

```
draw_ellipse(Vector2(150, 250), 50, 100, Color.FIREBRICK, true)
draw_ellipse(Vector2(350, 250), 100, 50, Color.FIREBRICK, true)
```

Observe that both ellipses have the same major- and minor-axis sizes. To check the definition of major and minor axis in this context, see [Wikipedia](https://en.wikipedia.org/wiki/Semi-major_and_semi-minor_axes)

### Minimal reproduction project (MRP)

N/A - This issue is not project-dependent. This is an issue with the parameter names as written into the source code, and how they are therefore described in the API documentation.