Fix #136098: Impossible to select of pose bones when in Weight Paint mode

This was caused by the select_id not being flushed to
the armature object.

This is because the selection code uses `FOREACH_OBJECT_IN_MODE_BEGIN`
to iterate over the objects. This doesn't call the depsgraph
which would, in normal circumstances, flush the select_id value
to the evaluated object.

Also fix #136141

Pull Request: https://projects.blender.org/blender/blender/pulls/136320

source/blender/draw/intern/draw_context.cc

@@ -1700,6 +1700,10 @@ void DRW_draw_select_loop(Depsgraph *depsgraph,
   draw_ctx.engines_init_and_sync([&](DupliCacheManager &duplis, ExtractionGraph &extraction) {
     if (use_obedit) {
       FOREACH_OBJECT_IN_MODE_BEGIN (scene, view_layer, v3d, object_type, object_mode, ob_iter) {
+        /* Depsgraph usually does this, but we use a different iterator.
+         * So we have to do it manually. */
+        ob_iter->runtime->select_id = DEG_get_original_object(ob_iter)->runtime->select_id;
+
         blender::draw::ObjectRef ob_ref(ob_iter);
         drw_engines_cache_populate(ob_ref, extraction);
       }