fix(l2): bad address parsing was forbidding sequencer to start (#2599)

**Motivation**

when fetching verifier contract's addresses, the address was not being
parsed correctly.

this is at least one reason the SP1 job is failing right now.

we should also consider alternatives to using the "0xaa" address to flag
a verifier as disabled.

Author: xqft

crates/l2/sequencer/l1_proof_sender.rs

@@ -77,7 +77,11 @@ impl L1ProofSender {
                         Overrides::default(),
                     )
                     .await?;
-                let address = Address::from_str(&response)
+
+                // remove leading zeros
+                let trimmed_response = response.trim_start_matches("0x").trim_start_matches("0");
+
+                let address = Address::from_str(&format!("0x{trimmed_response}"))
                     .map_err(|_| ConfigError::HexParsingError(response))?;
 
                 if address != DEV_MODE_ADDRESS {