[Bug-Candidate]: Slither is unable to locate the Modifier referenced in the IdentifierPath format.

### Describe the issue:

Slither is unable to locate the Modifier referenced in the IdentifierPath format.

### Code example to reproduce the issue:

```
contract A {
modifier m() virtual {
_;
}
}

contract C is A {
modifier m() override {
_;
}

function f() public A.m returns (uint) {}
}
```

### Version:

0.11.3

### Relevant log output:

```shell
ERROR:ContractSolcParsing:Missing function Variable not found: A.m (context C a.sol#7-13 (1 - 2))
INFO:Slither:a.sol analyzed (2 contracts with 100 detectors), 0 result(s) found
```