Fix tooltip on lang-specific scopes (#2013)

## Checklist

- [ ] I have added
[tests](https://www.cursorless.org/docs/contributing/test-case-recorder/)
- [ ] I have updated the
[docs](https://github.com/cursorless-dev/cursorless/tree/main/docs) and
[cheatsheet](https://github.com/cursorless-dev/cursorless/tree/main/cursorless-talon/src/cheatsheet)
- [ ] I have not broken the cheatsheet

packages/cursorless-vscode/src/ScopeTreeProvider.ts

@@ -222,12 +222,13 @@ class ScopeSupportTreeItem extends TreeItem {
     isVisualized: boolean,
   ) {
     let label: string;
-    let tooltip: string | undefined;
+    let tooltip: string;
 
     if (scopeTypeInfo.spokenForm.type === "success") {
       label = scopeTypeInfo.spokenForm.spokenForms
         .map((spokenForm) => `"${spokenForm}"`)
         .join(" | ");
+      tooltip = label;
     } else {
       label = "-";
       tooltip = scopeTypeInfo.spokenForm.requiresTalonUpdate