[composite compliance] allclose, linalg_eig (#82437)
Ref: #69991
Make `allclose` CompositeExplicit as it calls `item` (we can't get away from it) which makes it non Composite Compliant.
`linalg_eig` backward passes CompositeCompliance as it calls on `allclose`
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82437
Approved by: https://github.com/zou3519
