[5.2] Fix using onlyTrashed and withTrashed with whereHas #2

[acasar]

This is my attempt to fix #13390

What I did is:

• First we need to store an array of global scopes that were removed from the query
• If any scopes were removed from the hasQuery, we also need to remove them from the relationQuery.

@taylorotwell @themsaid

[themsaid]

The same issue was reported in 5.1 here #13198

[acasar]

Yeah, in 5.1 global scopes are quite complicated, so there is no easy way to backport these changes. An entirely different fix would need to be made for 5.1.

There is also this one, which is also not working correctly in 5.1: #11456 (comment)

I'm not even sure if this can be fixed in 5.1... If I have some more time next week I'll look into it, but maybe the only option will be to suggest some official workaround.