[10.x] Stop adding constraints twice on *Many to *One relationships via one()

[cosmastech]

@siarheipashkevich reported that constraints are duplicated when being converted from HasMany/HasManyThrough/MorphMany to HasOne/HasOneThrough/MorphOne

This PR will stop adding those constraints twice by employing the Relation::noConstraint() method (which was a TIL moment and I must say, is 🔥)

[siarheipashkevich]

@cosmastech will it save additional conditions?

$this->shifts()->one()->opened() . opened is a scope.

[cosmastech]

@cosmastech will it save additional conditions?

$this->shifts()->one()->opened() . opened is a scope.

@siarheipashkevich It should just ignore the constraints. Was the opened() scope not applying previously?

[siarheipashkevich]

@cosmastech please take a look at my comment and log
#46443 (comment)

we can see that the scope has been applied and it's ok

[cosmastech]

@cosmastech please take a look at my comment and log

#46443 (comment)

we can see that the scope has been applied and it's ok

The scope is applied after the fact so it should not be a problem.

Edit: even a scope applied in the original HasMany should be applied when you call one()