Avoid using deprecated autovalidate

lib/screens/settings_note_metadata.dart

@@ -207,7 +207,8 @@ class NoteOutputExample extends StatelessWidget {
     style = style.copyWith(fontFamily: "Roboto Mono");
 
     var doc = MdYamlDoc();
-    NoteSerializer.fromConfig(NotesFolderConfig.fromSettings(null)).encode(note, doc);
+    NoteSerializer.fromConfig(NotesFolderConfig.fromSettings(null))
+        .encode(note, doc);
 
     var codec = MarkdownYAMLCodec();
     var noteStr = codec.encode(doc);
@@ -395,7 +396,7 @@ class _CustomMetDataTileState extends State<CustomMetDataTile> {
         keyboardType: TextInputType.multiline,
         textCapitalization: TextCapitalization.words,
         controller: _textController,
-        autovalidate: true,
+        autovalidateMode: AutovalidateMode.onUserInteraction,
         maxLines: null,
         minLines: null,
       ),

lib/setup/key_editors.dart

@@ -66,12 +66,12 @@ class KeyEditor extends StatelessWidget {
           textAlign: TextAlign.left,
           maxLines: null,
           style: Theme.of(context).textTheme.bodyText2,
-          autovalidate: true,
+          autovalidateMode: AutovalidateMode.onUserInteraction,
           validator: validator,
           controller: textEditingController,
         );
       }),
-      autovalidate: true,
+      autovalidateMode: AutovalidateMode.onUserInteraction,
     );
 
     return SizedBox(

lib/widgets/rename_dialog.dart

@@ -62,7 +62,7 @@ class _RenameDialogState extends State<RenameDialog> {
           ),
         ],
       ),
-      autovalidate: true,
+      autovalidateMode: AutovalidateMode.onUserInteraction,
     );
 
     return AlertDialog(