Scribble scroll fix (#1745)

* Fix bug with scribble when the editor is scrollable - the scribble area was also being scrolled, now it is fixed

* code clean up - move ScribbleFocusable above CompositedTransformTarget when scrolling is not enabled for consistency with the scrolling scribble area fix

lib/src/widgets/raw_editor/raw_editor_state.dart

@@ -540,15 +540,15 @@ class QuillRawEditorState extends EditorState
       child = BaselineProxy(
         textStyle: _styles!.paragraph!.style,
         padding: baselinePadding,
-        child: QuillSingleChildScrollView(
+        child: _scribbleFocusable(
-          controller: _scrollController,
+          QuillSingleChildScrollView(
-          physics: widget.configurations.scrollPhysics,
+            controller: _scrollController,
-          viewportBuilder: (_, offset) => CompositedTransformTarget(
+            physics: widget.configurations.scrollPhysics,
-            link: _toolbarLayerLink,
+            viewportBuilder: (_, offset) => CompositedTransformTarget(
-            child: MouseRegion(
+              link: _toolbarLayerLink,
-              cursor: SystemMouseCursors.text,
+              child: MouseRegion(
-              child: _scribbleFocusable(
+                cursor: SystemMouseCursors.text,
-                QuilRawEditorMultiChildRenderObject(
+                child: QuilRawEditorMultiChildRenderObject(
                   key: _editorKey,
                   offset: offset,
                   document: doc,
@@ -574,13 +574,13 @@ class QuillRawEditorState extends EditorState
         ),
       );
     } else {
-      child = CompositedTransformTarget(
+      child = _scribbleFocusable(
-        link: _toolbarLayerLink,
+        CompositedTransformTarget(
-        child: Semantics(
+          link: _toolbarLayerLink,
-          child: MouseRegion(
+          child: Semantics(
-            cursor: SystemMouseCursors.text,
+            child: MouseRegion(
-            child: _scribbleFocusable(
+              cursor: SystemMouseCursors.text,
-              QuilRawEditorMultiChildRenderObject(
+              child: QuilRawEditorMultiChildRenderObject(
                 key: _editorKey,
                 document: doc,
                 selection: controller.selection,