support generic type when checking implicit conversion of symbol to string

[Zzzen]

Fixes #44462

When fixing this bug, I find bigint has the same problem.

playground

type numberOrBigint = number | bigint;

function getKey(key: numberOrBigint) {
    +key;   // ✔ should error, and the compiler does
    0 + key;  // ✔ should error, and the compiler does
}

function getKey2<S extends numberOrBigint>(key: S) {
    +key;  // ❌ should error , but the compiler does not
    0 + key;   // ✔ should error, and the compiler does
}

[theonlypwner]

bigint still has the same problem in playground on v4.74 and v4.8.0-beta