serializer: bypass bezier adj on keyframe type set

app/node/keyframe.cpp

@@ -99,7 +99,7 @@ const NodeKeyframe::Type &NodeKeyframe::type() const
 void NodeKeyframe::set_type(const NodeKeyframe::Type &type)
 {
   if (type_ != type) {
-    type_ = type;
+    set_type_no_bezier_adj(type);
 
     if (type_ == kBezier) {
       // Set some sane defaults if this keyframe existed in the track and was just changed
@@ -120,11 +120,15 @@ void NodeKeyframe::set_type(const NodeKeyframe::Type &type)
         }
       }
     }
-
-    emit TypeChanged(type_);
   }
 }
 
+void NodeKeyframe::set_type_no_bezier_adj(const Type &type)
+{
+  type_ = type;
+  emit TypeChanged(type_);
+}
+
 const QPointF &NodeKeyframe::bezier_control_in() const
 {
   return bezier_control_in_;

app/node/keyframe.h

@@ -98,6 +98,7 @@ public:
    */
   const Type& type() const;
   void set_type(const Type& type);
+  void set_type_no_bezier_adj(const Type& type);
 
   /**
    * @brief For bezier interpolation, the control point leading into this keyframe

app/node/project/serializer/serializer220403.cpp

@@ -865,7 +865,7 @@ void ProjectSerializer220403::LoadKeyframe(QXmlStreamReader *reader, NodeKeyfram
     } else if (attr.name() == QStringLiteral("time")) {
       key->set_time(rational::fromString(attr.value().toString()));
     } else if (attr.name() == QStringLiteral("type")) {
-      key->set_type(static_cast<NodeKeyframe::Type>(attr.value().toInt()));
+      key->set_type_no_bezier_adj(static_cast<NodeKeyframe::Type>(attr.value().toInt()));
     } else if (attr.name() == QStringLiteral("inhandlex")) {
       key_in_handle.setX(attr.value().toDouble());
     } else if (attr.name() == QStringLiteral("inhandley")) {