### 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)

Vector3i current;
	Vector3i next;
	double time_current;
	double time_next;
	if (!_fetch_compressed<1>(p_compressed_track, p_time, current, time_current, next, time_next)) {
		return false; 
	}
	if (time_current >= p_time || time_current == time_next) {
		r_ret = _uncompress_blend_shape(current);
	} else if (p_time >= time_next) {
		r_ret = _uncompress_blend_shape(next);
	} else {
		float c = (p_time - time_current) / (time_next - time_current);
		float from = _uncompress_blend_shape(current);
		float to = _uncompress_blend_shape(next);
		r_ret = Math::lerp(from, to, c);
	}
	return true;
}
template <uint32_t COMPONENTS>
bool Animation::_fetch_compressed(uint32_t p_compressed_track, double p_time, Vector3i &r_current_value, double &r_current_time, Vector3i &r_next_value, double &r_next_time, uint32_t *key_index) const {