feat(wasm-utxo): update assertion to use matches! macro

Improves code clarity by replacing the manual match statement with the
more concise matches! macro for descriptor type checking.

Issue: BTC-2652

Co-authored-by: llm-git <[email protected]>

Author: OttoAllmendinger

packages/wasm-utxo/src/descriptor.rs

@@ -218,13 +218,11 @@ mod tests {
         .unwrap();
 
         assert!(!desc.has_wildcard());
-        assert!(
-            match desc {
-                WrapDescriptor {
-                    0: crate::descriptor::WrapDescriptorEnum::Definite(_),
-                } => true,
-                _ => false,
+        assert!(matches!(
+            desc,
+            WrapDescriptor {
+                0: crate::descriptor::WrapDescriptorEnum::Definite(_),
             }
-        );
+        ));
     }
 }