Fix incorrect clear color flag on canvas renderer.

servers/rendering/renderer_rd/renderer_canvas_render_rd.cpp

@@ -2175,7 +2175,7 @@ void RendererCanvasRenderRD::_render_batch_items(RenderTarget p_to_render_target
 
 	RD::FramebufferFormatID fb_format = RD::get_singleton()->framebuffer_get_format(framebuffer);
 
-	RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(framebuffer, clear ? RD::DRAW_CLEAR_COLOR_ALL : RD::DRAW_DEFAULT_ALL, clear_colors, 1.0f, 0, Rect2(), RDD::BreadcrumbMarker::UI_PASS);
+	RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(framebuffer, clear ? RD::DRAW_CLEAR_COLOR_0 : RD::DRAW_DEFAULT_ALL, clear_colors, 1.0f, 0, Rect2(), RDD::BreadcrumbMarker::UI_PASS);
 
 	RD::get_singleton()->draw_list_bind_uniform_set(draw_list, fb_uniform_set, BASE_UNIFORM_SET);
 	RD::get_singleton()->draw_list_bind_uniform_set(draw_list, state.default_transforms_uniform_set, TRANSFORMS_UNIFORM_SET);