Extend MethodMatcher's ability to make structural matches when partial type information is available. (#7292)

This should help fix reports that org.openrewrite.gradle.UpgradePluginVersion is failing to update groovy scripts.

Author: sambsnyd

rewrite-java/src/main/java/org/openrewrite/java/MethodMatcher.java

@@ -300,6 +300,7 @@ public boolean matches(J.MethodDeclaration method, J.ClassDeclaration enclosing)
             return false;
         }
 
+        //noinspection NullableProblems
         List<JavaType> parameterTypes =
                 method
                         .getParameters()
@@ -363,7 +364,14 @@ public boolean matches(J.@Nullable MethodInvocation method, boolean matchUnknown
             return matchUnknownTypes && matchesAllowingUnknownTypes(method);
         }
 
-        return matches(method.getMethodType());
+        if (matches(method.getMethodType())) {
+            return true;
+        }
+
+        // When matchUnknownTypes is true, fall back to structural matching even when
+        // type information is present but incomplete (e.g. after lossy LST deserialization
+        // where interface hierarchies may be stripped from declaring types)
+        return matchUnknownTypes && matchesAllowingUnknownTypes(method);
     }
 
     private boolean matchesAllowingUnknownTypes(J.MethodInvocation method) {