Project administrators are unable to change project type

Issue Summary

Jira does not allow project administrators (users having Administer Projects permission without Jira Administrator global permission) to change project type (as it's being greyed out).

This is reproducible on Data Center: yes

Steps to Reproduce

1. Login with the user having Administer projects permission on the project
2. Go to the Project settings>Details and try to change the project type

Expected Results

The user should be able to open the drop-down list with available project types and choose different type

As per this doc:

Without the Jira Administrator global permission, project administrators can do the following:
...

• Change the project type

...

Actual Results

The project type field is greyed out:

Workaround

In Chrome:

1. Log in with user having Administer projects permission on the project
2. Open Developer tools>Elements.
3. Load Project settings>Details page
4. In developer tools:
   • Remove 'aui-disabled' from :

     <div class="aui-ss aui-ss-select aui-ss-has-entity-icon aui-disabled" id="projectTypeKey-single-select">

   • Remove 'disabled' from: 

     <input autocomplete="off" role="combobox" aria-autocomplete="list" aria-expanded="false" class="text aui-ss-field ajs-dirty-warning-exempt" id="projectTypeKey-field" type="text" aria-live="polite" data-lpignore="true" aria-controls="projectTypeKey-suggestions" disabled="">

   • Remove 'disabled="disabled"' from:

     <select class="project-type-select select aui-ss-select" name="projectTypeKey" id="projectTypeKey" disabled="disabled" multiple="multiple" style="display: none;">

5. Now you can use the drop-down menu on the Project type field. Choose a new project type
6. Click 'Save details