[Bug]: post member access assertion error

[0xalpharush]

Describe the issue:

Max member of library.identifier doesn't work properly
Relevant code here

slither/slither/visitors/slithir/expression_to_slithir.py

Line 416 in 4c976d5

# type(enum).max/min

Code example to reproduce the issue:

library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }
}
contract Test {
    function test() public returns(Math.Rounding){
        return type(Math.Rounding).max;
    }
}

Version:

0.9.2

Relevant log output:

line 419, in _post_member_access
    assert isinstance(type_expression_found, Identifier)
AssertionError

[0xalpharush]

Prob a similar fix as this #1574