AbstractDeviceGrant.scope is CharField(max_length=64, null=True) while the rest of the grants use scope = models.TextField(blank=True)

[dopry]

Describe the bug
64 chars could be too small for scopes.

Reviewing the broader auth ecosystem I see the following limits

• okta - 1024
• google - 2048
• WSO2 - 767

so 64 feels insuffient.

While Text is potentially larger than webserver header limits (8/16K) and browser url limits (2048), it shift the resposbility for ensuring acceptable scope lengths from DOT to the implementer without restricting them if they want to push the limits.