[Bug]: `Link to map` to a custom map failed if the custom map already have another linked favorite, unless manually edit `.favorites_share.json`

[amalgame21]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• Maps app is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

If a custom map already have a linked favorite, Link to map on a second favorite to that custom map will failed, unless manually edit .favorites_share.json to add the second link.

Steps to reproduce

1. Create custom map named CUSTOM MAP
2. On Default map, create a favorite point named 1 with category A
3. On Default map, create a favorite point named 2 with category B
4. On Default map, in My favorite menu A, click on 3-dot, then click Create share link
5. On Default map, in My favorite menu B, click on 3-dot, then click Create share link
6. On Default map, in My favorite menu A, click on 3-dot, then click Link to map, choose /Maps/CUSTOM MAP folder
7. Message: Favorite category linked to map CUSTOM MAP
8. On Default map, in My favorite menu B, click on 3-dot, then click Link to map, choose /Maps/CUSTOM MAP folder
9. Message: Failed to link Favorite category to map CUSTOM MAP

Expected behavior

Message: Favorite category linked to map CUSTOM MAP for favorite category B

Now the work around is manually editing the .favorites_share.json to add the favorites.

We cannot share Default map to others, we can only share one of the Default maps favorite to others (by link).
But we can share a CUSTOM MAP to others (by link/ by accounts, with view only permission), so when this bug is resolved, I can link the whole Default map to CUSTOM MAP and share it to other accounts.

Installation method

Other

Operating system

Other

PHP engine version

PHP 8.1

Web server

Nginx

Database engine version

PostgreSQL

Is this bug present after an update or on a fresh install of the server?

None

Is this bug present after an update or on a fresh install of the app?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

No response

List of activated Apps

Enabled:
  - activity: 2.21.1
  - calendar: 4.7.6
  - circles: 29.0.0-dev
  - cloud_federation_api: 1.12.0
  - comments: 1.19.0
  - contacts: 6.0.0
  - contactsinteraction: 1.10.0
  - dashboard: 7.9.0
  - dav: 1.30.1
  - end_to_end_encryption: 1.15.2
  - federatedfilesharing: 1.19.0
  - federation: 1.19.0
  - files: 2.1.0
  - files_downloadlimit: 2.0.0
  - files_pdfviewer: 2.10.0
  - files_reminders: 1.2.0
  - files_sharing: 1.21.0
  - files_trashbin: 1.19.0
  - files_versions: 1.22.0
  - firstrunwizard: 2.18.0
  - groupfolders: 17.0.0
  - logreader: 2.14.0
  - lookup_server_connector: 1.17.0
  - maps: 1.4.0
  - memories: 7.3.1
  - nextcloud_announcements: 1.18.0
  - notifications: 2.17.0
  - oauth2: 1.17.0
  - onlyoffice: 9.2.2
  - password_policy: 1.19.0
  - photos: 2.5.0
  - previewgenerator: 5.5.0
  - privacy: 1.13.0
  - provisioning_api: 1.19.0
  - recommendations: 2.1.0
  - related_resources: 1.4.0
  - serverinfo: 1.19.0
  - settings: 1.12.0
  - sharebymail: 1.19.0
  - support: 1.12.0
  - survey_client: 1.17.0
  - systemtags: 1.19.0
  - tasks: 0.16.0
  - text: 3.10.0
  - theming: 2.4.0
  - twofactor_backupcodes: 1.18.0
  - twofactor_webauthn: 1.4.0
  - updatenotification: 1.19.1
  - user_status: 1.9.0
  - viewer: 2.3.0
  - weather_status: 1.9.0
  - workflowengine: 2.11.0

Nextcloud Signing status

No response

Nextcloud Logs

No response

Browser Console

No response

Additional info

No response