runtimeModelName function
Returns the stable runtime-release file name for modelPath.
modelPath may be relative to example/assets/models, or it may include
that prefix. Both / and \\ separators are accepted.
Implementation
String runtimeModelName(String modelPath) {
final normalized = _normalizeModelPath(modelPath);
return runtimeModelNamesByPath[normalized] ??
(throw ArgumentError.value(modelPath, 'modelPath', 'Unknown model'));
}