Field value not saved when adding member using Add Member from Admin Add On

[ipokkel]

Describe the bug
When adding a member from Add Member from Admin the field value entered is not saved

To Reproduce
Steps to reproduce the behavior:

1. Go to Pods and extend PMPro Member with a field
2. Go to Add Member from Admin complete form, including the custom field created with Pods, and add member
3. Navigate to Users > All Users and open added user's profile.
4. See error.

Expected behavior
Member field data to be saved to wp_usermeta table.

Isolating the problem (mark completed items with an [x]):

• I have deactivated other plugins and confirmed this bug occurs when only Paid Memberships Pro plugin is active.
• This bug happens with a default WordPress theme active, or Memberlite.
• I can reproduce this bug consistently using the steps above.

Debug Log

``` PHP Notice: Trying to access array offset on value of type bool in C:\Users\Admin\Local Sites\pmpro\app\public\wp-content\plugins\pmpro-pods\src\Pods\Integration.php on line 187

PHP Notice: Trying to get property 'ID' of non-object in C:\Users\Admin\Local Sites\pmpro\app\public\wp-content\plugins\pmpro-pods\src\PMPro\Objects\Member_Profile.php on line 159

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