SuppliedNamedLocalThread<T> constructor

Creates a SuppliedNamedLocalThread with the given name and supplier function.

Parameters:

• name: A descriptive name for this thread-local variable
• supplier: A function that provides the initial value for each thread

Example:

// Various initialization patterns

// Simple value initialization
final defaultSettings = SuppliedNamedThreadLocal<Map<String, dynamic>>(
  'defaultSettings',
  () => {'theme': 'dark', 'language': 'en'},
);

// Complex object initialization
final databaseConnection = SuppliedNamedThreadLocal<Connection>(
  'dbConnection',
  () => Database.connect('thread_local_db'),
);

// Stateful initialization with logging
final activityLogger = SuppliedNamedThreadLocal<Logger>(
  'activityLogger',
  () {
    final logger = Logger('ThreadActivity');
    logger.info('Thread-local logger initialized');
    return logger;
  },
);