resolveHidShiftPressed function
Resolves the TUI host callback for Shift detection.
Web: returns null — no poller, degradation is the pre-TUI status quo.
Implementation
Future<bool Function()?> resolveHidShiftPressed({
Map<String, String>? env,
bool isMacOS = true,
void Function(SendPort port)? probeEntry,
Duration probeTimeout = const Duration(milliseconds: 300),
}) async => null;