Fix AnimationTree editor crash when renaming node

(cherry picked from commit eac806547fc866263a290a06f772cb1eea494b58)

editor/plugins/animation_blend_tree_editor_plugin.cpp

@@ -146,7 +146,7 @@ void AnimationNodeBlendTreeEditor::_update_graph() {
 			name->set_expand_to_text_length(true);
 			node->add_child(name);
 			node->set_slot(0, false, 0, Color(), true, 0, get_color("font_color", "Label"));
-			name->connect("text_entered", this, "_node_renamed", varray(agnode));
+			name->connect("text_entered", this, "_node_renamed", varray(agnode), CONNECT_DEFERRED);
 			name->connect("focus_exited", this, "_node_renamed_focus_out", varray(name, agnode), CONNECT_DEFERRED);
 			base = 1;
 			node->set_show_close_button(true);