3.2 - Fix Tween.is_active() always true after stop() and then start()

Fix #39760 & #39801

These issues were resolved in master branch (and closed) but are still active in the 3.2 branch.

scene/animation/tween.cpp

@@ -855,8 +855,22 @@ bool Tween::start() {
  return true;
  }
 
+ pending_update++;
+ for (List<InterpolateData>::Element *E = interpolates.front(); E; E = E->next()) {
+ InterpolateData &data = E->get();
+ data.active = true;
+ }
+ pending_update--;
+
  // We want to be activated
  set_active(true);
+
+ // Don't resume from current position if stop_all() function has been used
+ if (was_stopped) {
+ seek(0);
+ }
+ was_stopped = false;
+
  return true;
 }
 
@@ -925,6 +939,7 @@ bool Tween::stop(Object *p_object, StringName p_key) {
 bool Tween::stop_all() {
  // We no longer need to be active since all tweens have been stopped
  set_active(false);
+ was_stopped = true;
 
  // For each interpolation...
  pending_update++;

scene/animation/tween.h

@@ -115,7 +115,7 @@ class Tween : public Node {
  float speed_scale;
  mutable int pending_update;
  int uid;
-
+ bool was_stopped = false;
  List<InterpolateData> interpolates;
 
  struct PendingCommand {