Labels are lost when using requests from collections

[zahhar]

Describe the bug
When request from collection is used, its label is not populated into respective form field. This leads to multiply issues with saving edited requests back to collection (duplicated entries in collection can be created, original label value gets lost, etc.)

To Reproduce

1. Save request to collection and ensure it has a label (getWebhookInfo in my example):

2. Click on this request in collection to fill Request form as you usually do before starting working with saved request.

3. Note that Label field remains empty, however, it is expected to be populated with label given earlier to request saved to Collection. This is the first issue in the flow.

4. OK, nevertheless, let's proceed. Now fill the Label field once again with the same value getWebhookInfo and click Save button to save request into collection.

5. Note, that Label field in Save Request As popup is not populated, but contains default label placeholder My Request instead of getWebhookInfo value given earlier in the Request form. This is the second issue in the flow.

Expected behavior
Label given once to request should be preserved throughout the whole lifecycle of the request.

Desktop (please complete the following information):

• OS: MacOS
• Browser: Safari 13.1