Enhancement - Compatibility with BuddyPress (BuddyBoss) Registration.

[kimwhite]

Describe the bug
When using the BuddyPress/Boss registrations form, Custom Roles are not assigned when using a snippet to add a default role .

To Reproduce
Steps to reproduce the behavior:

1. Website with BuddyPress/Boss
2. Set up site to use BuddyPress registration.
3. Set up the level to assign multiple roles
4. Add snippet to assign default PMPro Level at registration
5. Go through Registration Process
6. Only the default role is added to users profile.

Screenshots

Expected behavior
Member should be assigned all roles for that level.

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.

WordPress Environment

``` WordPress 5.9.3 PMPro 2.8 Roles Add On 1.4.1 ```

[andrewlimaza]

I waas able to replicate this, I believe the issue here is that BuddyPress/BuddyBoss is owning this. Same goes for the edit user profile page, it may update the user roles based on the submission of this data.

We would need to add compatibility for this, or run our code really really late (hopefully that's the simple fix).

The snippet here could be run regularly to assign roles to users/members in this scenario - #8