Error while transforming with RN 0.64 and Typescript

Just updated to new React Native version and it's broken again.

Output:
```
error app/sampleFile.ts: function (prevType) {
this.state.exprAllowed = false;

if (prevType === types._let || prevType === types._c......
} could not be cloned.
Error: function (prevType) {
this.state.exprAllowed = false;

if (prevType === types._let || prevType === types._c......
} could not be cloned.
at Object.serialize (v8.js:202:7)
at _default (/home/sample/app/node_modules/metro-transform-worker/node_modules/@babel/core/lib/transformation/util/clone-deep.js:18:30)
at normalizeFile (/home/sample/app/node_modules/metro-transform-worker/node_modules/@babel/core/lib/transformation/normalize-file.js:52:36)
at normalizeFile.next ()
at run (/home/sample/app/node_modules/metro-transform-worker/node_modules/@babel/core/lib/transformation/index.js:31:50)
at run.next ()
at /home/sample/app/node_modules/metro-transform-worker/node_modules/@babel/core/lib/transform-ast.js:20:41
at Generator.next ()
at evaluateSync (/home/sample/app/node_modules/gensync/index.js:251:28)

```

Already updated my fork appropriately and it works with updated dependencies (+ necessary code changes). PR will be created soon.

Beginne damit, die Transformation von app/sampleFile.ts mit React Native 0.64 zu reproduzieren, und untersuche den Stack-Trace über metro-transform-worker und @babel/core/lib/transformation/clone-deep.js. Vergleiche die aktualisierten Abhängigkeiten und Codeänderungen, die im Issue erwähnt werden, und bestätige anschließend, dass die TypeScript-Datei erfolgreich transformiert wird, ohne dass der Cloning-Fehler auftritt.

Vom Indexierungsmodell aus dem Issue-Text verfasst.