Error message "Internal or recursive type is not allowed for public state variables" causes confusion

## Description

The following code snippet causes an error with message `recursive type is not allowed for public state variables`. I cannot find references to "recursive type" in the doc https://docs.soliditylang.org/en/latest/types.html. Can we improve the doc or the error message

```solidity
contract contract0 {
struct struct1 {
mapping(int64 => int64)[10] array2;
}
mapping(int64 => struct1) public mapping11;
}
```
## Environment

- Compiler version: 0.8.29

Start with the minimal Solidity snippet in the issue and reproduce the compiler diagnostic using Solidity 0.8.29. Trace where the message "recursive type is not allowed for public state variables" is produced, then determine whether the documentation at docs.soliditylang.org/en/latest/types.html or the diagnostic should explain the restriction. Done means the restriction is clearly documented or the error message is made understandable.

Written by the indexing model from the issue text.