Inconsistent internal server app identification

[mtrezza]

New Issue Checklist

• [x] I am not disclosing a vulnerability.
• [x] I am not just asking a question.
• [x] I have searched through existing issues.
• [x] I can reproduce the issue with the latest versions of Parse Server and Parse Dashboard.

Issue Description

As described in https://github.com/parse-community/parse-dashboard/pull/2627#issuecomment-2562944934, the internal identification of an app is not well implemented in the sense that:

• it's not unique across features, e.g. scripts
• it imposes restrictions on app names (no duplicates)
• it's not clearly documented

Suggested Solution

Review this identification logic, unify it across the features in the dashboard (scripts, info panel, etc) and document any restrictions (e.g. no duplicate app names, etc) for the dashboard user.

Environment

Dashboard

• Parse Dashboard version: 6.0.0

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