fix: onPaste should return false to prevent paste action (#3974)

* Update App.tsx

* Update README_NEXT.md

* Update CHANGELOG.md

* Update App.tsx

* Update App.tsx

* Update src/packages/excalidraw/CHANGELOG.md

* fix lint

Co-authored-by: Aakansha Doshi <aakansha1216@gmail.com>

src/components/App.tsx

@@ -1193,8 +1193,12 @@ class App extends React.Component<AppProps, AppState> {
       }
       const data = await parseClipboard(event);
       if (this.props.onPaste) {
-        if (await this.props.onPaste(data, event)) {
-          return;
+        try {
+          if ((await this.props.onPaste(data, event)) === false) {
+            return;
+          }
+        } catch (e) {
+          console.error(e);
         }
       }
       if (data.errorMessage) {