Commit diffs with many changed (and wide) tables times out

Offending diff: https://www.dolthub.com/repositories/dolthub/nba-players/compare/master/hpg80educhq1ed8h7d6tm3olbvkjn8l9 (also on dev)

The response from dolthubapi returns right away but getting the table diff list from the response in graphql is what times out

```ts
// Times out
const res = await api.getCommitDiff(req);
return `successful return. info: ${res.getTableDiffsList().length}`;

// Returns immediately
const res = await api.getCommitDiff(req);
return `successful return. info: ${res.getFromCommitName()}`;
```