encodeCall fails to reference public member

Solidity generates an accessor method for every public member.
However, `abi.encodeCall` doesn't recognize this variable.

```solidity
// SPDX-License-Identifier: GPL-3.0
// import 'hardhat/console.sol';

pragma solidity ^0.8.12;

contract Test {

uint public val;
constructor(uint x) {
val = x;
}
function fun() public view returns(uint) { return val; }
}

contract Test1 {

function test(Test a) internal view {
a.val(); //successfully reference the variable as method
a.fun();
abi.encodeCall(Test.fun, ());
abi.encodeCall(Test.val, ()); // <== fails to compile
}
}
```

Start by compiling the minimal Test and Test1 example, comparing abi.encodeCall(Test.fun, ()) with abi.encodeCall(Test.val, ()). Trace the compiler handling of public-member accessors and abi.encodeCall; the issue is done when the generated accessor is accepted without breaking the existing function case.

Written by the indexing model from the issue text.