Fix AnimationPlaybackTrack seeking behavior overall

Co-authored-by: jsjtxietian <jsjtxietian@outlook.com>
Co-authored-by: Miguel0312 <miguel.vpereira14@gmail.com>
Co-authored-by: BruceLiCong <citb_li@163.com>

scene/animation/animation_mixer.cpp

@@ -1596,7 +1596,7 @@ void AnimationMixer::_blend_process(double p_delta, bool p_update_only) {
  }
  } break;
  case Animation::TYPE_ANIMATION: {
- if (p_update_only || Math::is_zero_approx(blend)) {
+ if (Math::is_zero_approx(blend)) {
  continue;
  }
  TrackCacheAnimation *t = static_cast<TrackCacheAnimation *>(track);
@@ -1623,25 +1623,25 @@ void AnimationMixer::_blend_process(double p_delta, bool p_update_only) {
  double at_anim_pos = 0.0;
  switch (anim->get_loop_mode()) {
  case Animation::LOOP_NONE: {
- at_anim_pos = MAX((double)anim->get_length(), time - pos); //seek to end
+ at_anim_pos = MIN((double)anim->get_length(), time - pos); // Seek to end.
  } break;
  case Animation::LOOP_LINEAR: {
- at_anim_pos = Math::fposmod(time - pos, (double)anim->get_length()); //seek to loop
+ at_anim_pos = Math::fposmod(time - pos, (double)anim->get_length()); // Seek to loop.
  } break;
  case Animation::LOOP_PINGPONG: {
  at_anim_pos = Math::pingpong(time - pos, (double)a->get_length());
  } break;
  default:
  break;
  }
- if (player2->is_playing() || seeked) {
- player2->seek(at_anim_pos);
+ if (player2->is_playing()) {
+ player2->seek(at_anim_pos, false, p_update_only);
  player2->play(anim_name);
  t->playing = true;
  playing_caches.insert(t);
  } else {
  player2->set_assigned_animation(anim_name);
- player2->seek(at_anim_pos, true);
+ player2->seek(at_anim_pos, true, p_update_only);
  }
  } else {
  // Find stuff to play.