Incorrect error message when declaring storage parameters public functions

## Description

The following code throws an error with message `Data location must be "memory" or "calldata" for parameter in external function, but "storage" was given.`

```solidity
function f(S storage s) external view {

}
```

The after changing `external` into `public`, I got `Data location must be "memory" or "calldata" for parameter in function, but "storage" was given.`. It's a simple typo I think. We need to specify that no `storage` in the parameter list of a `public` function.

## Environment

- Compiler version: 0.8.28

No source files, tests, or entry points are named. Reproduce the diagnostic with the supplied Solidity example using compiler version 0.8.28, then trace how parameter data-location errors distinguish external and public functions. Done means the public-function message explicitly states that storage is not permitted in the parameter list and the relevant diagnostic tests pass.

Written by the indexing model from the issue text.