Fix for selection handles behaviour and unnessesary style assert (#1727)

lib/src/models/documents/nodes/leaf.dart

@@ -26,13 +26,6 @@ abstract base class Leaf extends Node {
   Object get value => _value;
   Object _value;
 
-  @override
-  void applyStyle(Style value) {
-    assert(value.isInline || value.isIgnored || value.isEmpty,
-        'Unable to apply Style to leaf: $value');
-    super.applyStyle(value);
-  }
-
   @override
   Line? get parent => super.parent as Line?;
 

lib/src/widgets/others/text_selection.dart

@@ -308,10 +308,13 @@ class EditorTextSelectionOverlay {
           )
         : null;
 
+    update(value.copyWith(
+      selection: currSelection,
+      composing: TextRange.empty,
+    ));
+
     selectionDelegate
-      ..userUpdateTextEditingValue(
-          value.copyWith(selection: currSelection, composing: TextRange.empty),
-          SelectionChangedCause.drag)
+      ..userUpdateTextEditingValue(value, SelectionChangedCause.drag)
       ..bringIntoView(textPosition);
   }
 

lib/src/widgets/raw_editor/raw_editor_state.dart

@@ -133,6 +133,7 @@ class QuillRawEditorState extends EditorState
 
     if (cause == SelectionChangedCause.toolbar) {
       bringIntoView(textEditingValue.selection.extent);
+      hideToolbar();
 
       // Collapse the selection and hide the toolbar and handles.
       userUpdateTextEditingValue(