fix(ocm-invites): add route to invite accept dialog

[ArtificialOwl]

• get remote details about the invite accept dialog feature
• add details about invite accept dialog to local ocm discovery
• link to accept dialog is configured via appconfig:

./occ config:app:set core ocm_invite_accept_dialog --value 'contacts.federated_invites.invite_accept_dialog'

if empty, feature disabled (disabled by default)

[ArtificialOwl]

/backport to stable32

[AndyScherzinger]

🐘

[backportbot]

The backport to stable32 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable32
git pull origin stable32

# Create the new backport branch
git checkout -b backport/55196/stable32

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 5e66cfe5

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/55196/stable32

Error: Failed to push branch backport/55196/stable32: remote: {"auth_status":"auth_error","body":"Invalid username or token. Password authentication is not supported for Git operations."}
fatal: Authentication failed for 'https://github.com/nextcloud/server.git/'

---

Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.

[AndyScherzinger]

/backport to stable32

[mickenordin]

@ArtificialOwl how do the set this config value to /apps/contacts/ocm/invite-accept-dialog from the contacts app?

[ArtificialOwl]

@ArtificialOwl how do the set this config value to /apps/contacts/ocm/invite-accept-dialog from the contacts app?

call IAppConfig::setValueString('core', 'ocm_invite_accept_dialog', 'contacts.federated_invites.invite_accept_dialog'); from a repair step if enabled by default, or from a controller if it is enabled by external action