Update the checks on the application/compose modal to use the checks as others

[Alt-iOS]

What is this PR about?

When sharing git access to users or even admin users, in the UI for the app/compose section, they had an error message saying they could switch it to a git source they had access but couldn't change anything in the current one. This simply re-uses the existing func that takes into account not only if the user is the owner of the git source but if they have access via their role or if the git instance is shared with the org.

Checklist

Before submitting this PR, please make sure that:

• You created a dedicated branch based on the canary branch.
• You have read the suggestions in the CONTRIBUTING.md file https://github.com/Dokploy/dokploy/blob/canary/CONTRIBUTING.md#pull-request
• You have tested this PR in your local instance. If you have not tested it yet, please do so before submitting. This helps avoid wasting maintainers' time reviewing code that has not been verified by you.

Issues related (if applicable)

closes #4469

Screenshots (if applicable)