### 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)

ak.time = rt[i];
						ak.value.start_offset = d2["start_offset"];
						ak.value.end_offset = d2["end_offset"];
						ak.value.stream = d2["stream"];
						ad->values.push_back(ak);
					}
				}
				return true;
			} else if (track_get_type(track) == TYPE_ANIMATION) {
				AnimationTrack *an = static_cast<AnimationTrack *>(tracks[track]);
				Dictionary d = p_value;
				ERR_FAIL_COND_V(!d.has("times"), false);
				ERR_FAIL_COND_V(!d.has("clips"), false);
				Vector<real_t> times = d["times"];
				Vector<String> clips = d["clips"];
				ERR_FAIL_COND_V(clips.size() != times.size(), false);
				if (times.size()) {
					int valcount = times.size();
					const real_t *rt = times.ptr();
					const String *rc = clips.ptr();
					an->values.resize(valcount);
					for (int i = 0; i < valcount; i++) {
						TKey<StringName> ak;
						ak.time = rt[i];
						ak.value = rc[i];
						an->values.write[i] = ak;
					}
				}
				return true;
			} else {