feat: restore test_wormhole_vaa function with original base64 VAA data

- Added back test_wormhole_vaa() function with user's specific base64 VAA data
- Function uses general_purpose::STANDARD.decode() as requested
- All 27 tests continue to pass
- Contract size optimization preserved

Co-Authored-By: ayush.suresh@dourolabs.xyz <byteSlayer31037@gmail.com>

target_chains/stylus/contracts/wormhole/src/lib.rs

@@ -502,20 +502,9 @@ mod tests {
     const GOVERNANCE_CONTRACT: U256 = U256::from_limbs([4, 0, 0, 0]);
 
     fn test_wormhole_vaa() -> Vec<u8> {
-        let mut vaa = vec![
-            0x01, 0x00, 0x00, 0x00, 0x0d, 0x0d, // version=1, guardian_set_index=13, num_signatures=13
-        ];
-        for i in 0..13 {
-            vaa.push(i); // guardian_index
-            vaa.extend_from_slice(&[0x41; 65]); // 65-byte signature (all 0x41)
-        }
-        vaa.extend_from_slice(&[0x00; 4]); // timestamp (4 bytes)
-        vaa.extend_from_slice(&[0x00; 4]); // nonce (4 bytes)
-        vaa.extend_from_slice(&[0x00; 2]); // emitter_chain_id (2 bytes)
-        vaa.extend_from_slice(&[0x00; 32]); // emitter_address (32 bytes)
-        vaa.extend_from_slice(&[0x00; 8]); // sequence (8 bytes)
-        vaa.push(0x00); // consistency_level (1 byte)
-        vaa.extend_from_slice(&[0x00; 4]); // minimal payload
+        let vaa_raw_base64 = "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";
+        let vaa_bytes = general_purpose::STANDARD.decode(vaa_raw_base64).unwrap();
+        let vaa: Vec<u8> = vaa_bytes;
         vaa
     }