Function extract_rdx_from_bundle 

pub fn extract_rdx_from_bundle(
    _bridge: &mut SignalBridge,
    bundle_bytes: &[u8],
) -> Result<String, Box<dyn Error>>

Extracts RDX fingerprint from a prekey bundle without adding contact

Arguments

• _bridge - Signal bridge instance (unused)
• bundle_bytes - Serialized prekey bundle

Returns

RDX fingerprint