### Tested versions

- Reproducible in: v4.2.stable.official [46dc27791]
- Not reproducible in: v4.1.3.stable

### System information

Godot v4.2.stable - Windows 10.0.22621 - Vulkan (Forward+) - dedicated AMD Radeon RX 6600 (Advanced Micro Devices, Inc.; 31.0.21023.2010) - AMD Ryzen 7 5700X 8-Core Processor (16 Threads)

### Issue description

Starting with Godot 4.2, changing a Control node's anchor offsets with an AnimationPlayer node results in the offsets "snapping" to the keyframes, as if Nearest interpolation were used. 

This only applies to the Linear Interpolation Mode; Cubic still works as expected.

![resize_interp_fail](https://github.com/godotengine/godot/assets/26508550/a10a973f-afdc-45f2-986c-594aa3cdc9dc)

I encountered this regression when upgrading my project from 4.1.3 to 4.2. Minimum reproduction project provided below.

### Steps to reproduce

- Create a Control node with a Custom anchor preset.
- Create an AnimationPlayer track for one or more of its anchor offsets, with the Continuous update mode and Linear interpolation.
- Add keyframes to track(s)
- Play animation (either in the editor or in-game)

### Minimal reproduction project (MRP)

[ControlResize.zip](https://github.com/godotengine/godot/files/13589517/ControlResize.zip)

} break;
		case TYPE_VALUE: {
			ValueTrack *vt = static_cast<ValueTrack *>(t);
			int k = _find(vt->values, p_time);
			if (k < 0 || k >= vt->values.size()) {
				return -1;
			}
			if ((p_find_mode == FIND_MODE_APPROX && !Math::is_equal_approx(vt->values[k].time, p_time)) || (p_find_mode == FIND_MODE_EXACT && vt->values[k].time != p_time)) {
				return -1;
			}
			return k;
		} break;
		case TYPE_METHOD: {
			MethodTrack *mt = static_cast<MethodTrack *>(t);
			int k = _find(mt->methods, p_time);
			if (k < 0 || k >= mt->methods.size()) {
				return -1;
			}
			if ((p_find_mode == FIND_MODE_APPROX && !Math::is_equal_approx(mt->methods[k].time, p_time)) || (p_find_mode == FIND_MODE_EXACT && mt->methods[k].time != p_time)) {
				return -1;
			}
			return k;
		} break;
		case TYPE_BEZIER: {
			BezierTrack *bt = static_cast<BezierTrack *>(t);
			int k = _find(bt->values, p_time);
			if (k < 0 || k >= bt->values.size()) {
				return -1;
			}
			if ((p_find_mode == FIND_MODE_APPROX && !Math::is_equal_approx(bt->values[k].time, p_time)) || (p_find_mode == FIND_MODE_EXACT && bt->values[k].time != p_time)) {