Kibana Spaces - Loss of data when editing a Space

[barlowm]

Kibana version:
7.3

Elasticsearch version:

Server OS version:

Browser version:

Browser OS version:

Original install method (e.g. download page, yum, from source, etc.):

Describe the bug:
Create a new or edit existing space within the "Manage Spaces"
Click the "roles"

Steps to reproduce:

1. Navigate to the "Manage Spaces" button and click it.
2. The "Spaces" page opens.
3. Click the "Create a space" button
4. Select the "Name" field and enter a name (or modify an existing name)
5. Click the "Roles" link at the bottom of the page
   
6. Notification of "Security Disabled"
   
7. Go back to the spaces page that was being edited.
8. Edits are lost

Expected behavior:
User should be prompted to save data before being allowed to go to the "Roles" page

Screenshots (if relevant):

Errors in browser console (if relevant):

Provide logs and/or server output (if relevant):

Any additional context:

[myasonik]

Probably all forms across Kibana should either:

1. notify the user that they're about to lose data
2. save a draft state of the form so it's pre-filled in for next time (but then that probably requires more design for trashing the draft completely)

[elasticmachine]

Pinging @elastic/kibana-security