### 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)

ERR_FAIL_INDEX_V(p_track, tracks.size(), UPDATE_CONTINUOUS);
	Track *t = tracks[p_track];
	ERR_FAIL_COND_V(t->type != TYPE_VALUE, UPDATE_CONTINUOUS);
	ValueTrack *vt = static_cast<ValueTrack *>(t);
	return vt->update_mode;
}
template <class T>
void Animation::_track_get_key_indices_in_range(const Vector<T> &p_array, double from_time, double to_time, List<int> *p_indices, bool p_is_backward) const {
	int len = p_array.size();
	if (len == 0) {
		return;
	}
	int from = 0;
	int to = len - 1;
	if (!p_is_backward) {
		while (p_array[from].time < from_time || Math::is_equal_approx(p_array[from].time, from_time)) {
			from++;
			if (to < from) {
				return;
			}
		}
		while (p_array[to].time > to_time && !Math::is_equal_approx(p_array[to].time, to_time)) {
			to--;
			if (to < from) {
				return;
			}