[OCM] Users can invite themselves to their own federated connection

[2403905]

Describe the bug

When a user generates a token for federated connection and pastes it to their own accept invitation field, then a federated connection is created with the user itself.

Related issue owncloud/ocis#11004

Expected behavior

Deny to accept the federated connection from the same instance.

Actual behavior

A clear and concise description of what happened.

Setup

Please describe how you started the server and provide a list of relevant environment variables or configuration files.

OCIS_XXX=somevalue
OCIS_YYY=somevalue
PROXY_XXX=somevalue

Additional context

Add any other context about the problem here.

[mzner]

@2403905 I'm not able to reproduce this bug any more. Is this still relevant or should we close the ticket?

@LukasHirt fyi

[LukasHirt]

Can confirm that I am now receiving correct response in this case:

{
    "code": "INVALID_PARAMETER",
    "message": "can not accept an invite from the same instance"
}

Versions:

Infinite Scale 7.1.0+c2736dfb47 Community
ownCloud Web UI 11.3.0

[2403905]

It was fixed on the backend. But I think we should have some validation on web and disallow pressing the Accept invitation button.