Netflix’s immortal action sequel returns with higher stakes, darker tones, and a lot less firepower — is “The Old Guard 2” already past its prime? “The Old Guard 2” begins with the kind of over-the-top violent cold open that’s clearly trying to channel Bond-movie swagger — only with more brooding and less wit. Charlize Theron’s … Continue reading ‘The Old Guard 2’ Review: Charlize Theron Leads a Franchise That’s Lost Its Spark