Parent field is not shown in quick issue create dialog

Issue Summary

After the recent changes to the Epic link and Parent link being replaced by the Parent field, the Quick Issue creates dialogue used by connect app developers that does not show the new Parent field but the Epic link and Parent link are disabled as well. Hence this screen won't allow users to choose Parent issue while creating.

Steps to Reproduce

1. Follow openCreateIssueDialog using the Connect Javascript API
2. Try to Epic and parent links.

Expected Results

The arent field is shown in the quick issue create screen dialog

Actual Results

Both Epic link and Parent link fields are disabled asking to use the Parent field but the Parent field is not present in the dialog.

Workaround

Use the Epic Link and Parent Link fields in the "Quick Issue Create" dialog. These fields are compatible with Parent, so the Parent field in the resulting issue will be populated with the value from Epic Link or Parent Link. These fields will remain disabled in all other places.