isArrayLike() breaks with string primitives

[mernen]

The isArrayLike test in 1.0 worked properly with any string values, returning true (since they can be indexed just like String objects and work with functions like Array.prototype.forEach). The new test in 1.2 (introduced by #3356) raises a TypeError, because the in operator cannot be used on a non-object.

[timraymond]

@btford You can probably can close this issue—You mentioned that it was resolved here 5b8c788 on this PR #3714 .

[caitp]

Wasn't there another issue recently saying that isArrayLike was reporting false positives for anything with a 'length' property (IE string primitives)? #4751