evas: Set weight to "expand" by default

This is a semi experimental patch to set the default weight
of objects to (1, 1), i.e. EXPAND. This seems like a more
sensible default value than no weight. Some objects may not
need the expand weight, but this seems to be the minority,
not the majority.

Ref T5301

src/lib/evas/canvas/evas_object_main.c

@@ -207,6 +207,9 @@ _efl_canvas_object_efl_object_finalize(Eo *eo_obj, Evas_Object_Protected_Data *o
    if (!EVAS_OBJECT_DATA_ALIVE(obj)) goto end;
    if (obj->legacy.ctor) goto end;
 
+   if (!obj->legacy.weight_set)
+     efl_gfx_size_hint_weight_set(eo_obj, 1.0, 1.0);
+
    if (obj->legacy.visible_set /* && ... */)
      {
         obj->legacy.finalized = EINA_TRUE;
@@ -1628,6 +1631,7 @@ _efl_canvas_object_efl_gfx_size_hint_hint_weight_get(Eo *eo_obj EINA_UNUSED, Eva
 EOLIAN static void
 _efl_canvas_object_efl_gfx_size_hint_hint_weight_set(Eo *eo_obj, Evas_Object_Protected_Data *obj, double x, double y)
 {
+   obj->legacy.weight_set = 1;
    if (obj->delete_me)
      return;
    evas_object_async_block(obj);

src/lib/evas/canvas/evas_render.c

@@ -2880,6 +2880,10 @@ evas_render_pre(Evas *eo_e, Evas_Public_Data *evas)
 
         if (!obj->legacy.visible_set)
           efl_gfx_visible_set(eo_obj, EINA_TRUE);
+
+        // weight should be set during finalize()
+        if (EINA_UNLIKELY(!obj->legacy.weight_set))
+          efl_gfx_size_hint_weight_set(eo_obj, 1.0, 1.0);
      }
 
    eina_evlog("-render_pre_objects_finalize", eo_e, 0.0, NULL);

src/lib/evas/include/evas_private.h

@@ -1261,6 +1261,7 @@ struct _Evas_Object_Protected_Data
    struct {
       Eina_Bool                ctor : 1; // used legacy constructor
       Eina_Bool                visible_set : 1; // visibility manually set
+      Eina_Bool                weight_set : 1; // weight manually set
       Eina_Bool                finalized : 1; // object fully constructed
    } legacy;