### Godot version

4.2 RC2

### System information

Any

### Issue description

AnimationMixer separates the accuracy of how discrete keys are retrieved when seeking between internal seeking and external seeking. FYI: https://github.com/godotengine/godot/pull/80708.

Since AnimationPlayer currently treats everything as an internal seek, so it needs to propagate the external seek information.

### Steps to reproduce

Seek AnimationTrackEditor

### Minimal reproduction project

[gd_anim_unittest_1.zip](https://github.com/godotengine/godot/files/13492063/gd_anim_unittest_1.zip)

if (!is_playing()) {
		play(p_name);
	} else {
		playback_queue.push_back(p_name);
	}
}
Vector<String> AnimationPlayer::get_queue() {
	Vector<String> ret;
	for (const StringName &E : playback_queue) {
		ret.push_back(E);
	}
	return ret;
}
void AnimationPlayer::clear_queue() {