addProperties method
Adds properties to the container
Implementation
void addProperties(Map<String, String> properties) {
// Create new context with updated properties
final newProps = Map<String, String>.from(_context.properties);
newProps.addAll(properties);
_context = InjectionContext(
activeProfiles: _context.activeProfiles,
properties: newProps,
allowCircularDependencies: _allowCircularDependencies,
);
}