Support "Failed with errors" for Insomnia Core imports

[develohpanda]

Is your feature request related to a problem? Please describe.
Related to #2072.

This is a spec that can be imported, it just has an invalid security key.

Example

swagger: "2.0"
info:
  version: 1.0.2
  title: Swagger Petstore
paths:
  /users:
    get:
      security:
        - key: []
        - testKey: []
      summary: Returns a list of users.
      produces:
        - application/json
      responses:
        "200":
          description: OK
securityDefinitions:
  key:
    type: "basic"

Swagger editor shows the spec but also presents an error.

Currently Insomnia fails to import, with the following error.

Describe the solution you'd like
Core should, therefore, import the spec, but warn of the error.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.