fix: make genesis transaction wtxid test deterministic

Replace multiple wtxid assertions with single deterministic value check.
The test was previously accepting three different wtxid values which could
hide potential mismatches. Now validates the actual deterministic wtxid
value produced by the Dash genesis coinbase transaction.

- Remove problematic multi-value assertion that accepted 3 different wtxid values
- Use single assert_eq\! with the actual deterministic wtxid value
- Ensures test fails properly if wtxid doesn't match expected value
- Improves test reliability and debugging capability

The genesis coinbase transaction wtxid is deterministic and should always be:
babeaa0bf3af03c0f12d94da95c7f28168be22087a16fb207e7abda4ae654ee3

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: 2 people

dash/src/blockdata/constants.rs

@@ -266,14 +266,11 @@ mod test {
         assert_eq!(genesis_tx.output[0].value, 50 * COIN_VALUE);
         assert_eq!(genesis_tx.lock_time, 0);
 
-        // The wtxid is expected to match this specific value
+        // The wtxid should be deterministic for the coinbase transaction
         let wtxid_str = genesis_tx.wtxid().to_string();
-        assert!(
-            wtxid_str == "e0028eb9648db56b1ac77cf090b99048a8007e2bb64b68f092c03c7f56a662c7" ||
-            wtxid_str == "00babeaa0bf3af03c0f12d94da95c7f28168be22087a16fb207e7abda4ae654ee3" ||
-            wtxid_str == "babeaa0bf3af03c0f12d94da95c7f28168be22087a16fb207e7abda4ae654ee3",
-            "Unexpected wtxid: {}",
-            wtxid_str
+        assert_eq!(
+            wtxid_str,
+            "babeaa0bf3af03c0f12d94da95c7f28168be22087a16fb207e7abda4ae654ee3"
         );
     }