[clang-tidy] modernize-use-string-view may result in uncompiled code

```c++
#include
#include
#include

std::string foo() {
return "foo";
}

int main() {
return strlen(foo().c_str());
}
```

`std::string_view` doesn't have `c_str` method.

Since it's impossible to fix, it should be reflected as known limitation

Start by reading the clang-tidy modernize-use-string-view documentation and checking how the supplied C++ example is transformed. Document the c_str limitation as a known limitation, with the example showing that the transformed code does not compile.

Written by the indexing model from the issue text.