### Preflight Checklist

I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

12.0.2

### What operating system are you using?

macOS

### Operating System Version

macOS Catalina 10.15.7

### What arch are you using?

x64

### Last Known Working Electron version

_No response_

### Expected Behavior

Returning an invalid serial port ID in the callback of the `select-serial-port` event handler of `session` should not crash Electron.

### Actual Behavior

Returning an invalid serial port ID in the callback of the `select-serial-port` event handler of `session` crashes Electron with a SIGSEGV. Calling the callback with `"foo"` or any string that is clearly not a valid serial port ID is enough to trigger the bug. Valid serial port IDs and empty strings work as expected.

### Testcase Gist URL

_No response_


shell/browser/serial/serial_chooser_controller.cc
RunCallback(nullptr);
  if (chooser_context_) {
    chooser_context_->RemovePortObserver(this);
  }
}
api::Session* SerialChooserController::GetSession() {
  if (!web_contents()) {
    return nullptr;
  }
  return api::Session::FromBrowserContext(web_contents()->GetBrowserContext());
}
void SerialChooserController::OnPortAdded(
    const device::mojom::SerialPortInfo& port) {
  ports_.push_back(port.Clone());
  api::Session* session = GetSession();
  if (session) {
    session->Emit("serial-port-added", port.Clone(), web_contents());
  }
}
void SerialChooserController::OnPortRemoved(