In order to see a project a user either needs "Administer Jira" global permission, "Administer Projects" project permission or "Browse Projects" project permission. However, /mypermissions endpoint always requires "Browse Projects" project permission when checking permissions against projects.

Current behavior:
Users with "Administer Jira" global permission or "Administer Projects" project permission but no "Browse Projects" project permission for a project cannot use /mypermissions endpoint to check permissions in that project.

Expected behavior:
Users with "Administer Jira" global permission or "Administer Projects" project permission but no "Browse Projects" project permission for a project should be able to use /mypermissions endpoint to check permissions in that project.