[Bug] Recover from big request

**Describe the bug**
I copied and pasted a request which has a really large boy, the application stopped working, and now everytime I open it goes down with the "Insomnia has become unresponsive. Do you want to reload"?. Is there any way to solve this? I really don't want to lose every curl I currently have.

**To Reproduce**
Steps to reproduce the behavior:
1. Paste a request with a large body.'
4. See how the application stops working.

**Expected behavior**
I would expect it to give me a way of at least deleting the request that's failing, so I can keep using the application. Specially once I close it and then re-open it.

**Desktop (please complete the following information):**
- OS: macOS 10.15.1
- Installation Method: dmg.
- App Version [e.g. v7.0.3]

No files, tests, or entry points are named in the issue. Start by reproducing the large-request failure on macOS and inspect how the application loads persisted requests; done means a request with a large body no longer makes the app unusable after reopening, with a way to delete the failing request without losing the others.

Written by the indexing model from the issue text.