feat: box select frame & children to allow resizing at the same time (#9031)

* box select frame & children

* avoid selecting children twice to avoid double their moving

* do not show ele stats if frame and children selected together

* do not update frame membership if selected together

* do not group frame and its children

* comment and refactor code

* hide align altogether

* include frame children when selecting all

* simplify

---------

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

packages/excalidraw/components/Stats/index.tsx

@@ -31,6 +31,7 @@ import "./Stats.scss";
 import { isGridModeEnabled } from "../../snapping";
 import { getUncroppedWidthAndHeight } from "../../element/cropElement";
 import { round } from "../../../math";
+import { frameAndChildrenSelectedTogether } from "../../frame";
 
 interface StatsProps {
   app: AppClassProperties;
@@ -170,6 +171,10 @@ export const StatsInner = memo(
       return getAtomicUnits(selectedElements, appState);
     }, [selectedElements, appState]);
 
+    const _frameAndChildrenSelectedTogether = useMemo(() => {
+      return frameAndChildrenSelectedTogether(selectedElements);
+    }, [selectedElements]);
+
     return (
       <div className="exc-stats">
         <Island padding={3}>
@@ -226,7 +231,7 @@ export const StatsInner = memo(
             {renderCustomStats?.(elements, appState)}
           </Collapsible>
 
-          {selectedElements.length > 0 && (
+          {!_frameAndChildrenSelectedTogether && selectedElements.length > 0 && (
             <div
               id="elementStats"
               style={{