Fix JavaTemplate statement replacement regression for non-J.Block parent cursors (#7123)

Author: timtebeek

rewrite-java/src/main/java/org/openrewrite/java/internal/template/JavaTemplateJavaExtension.java

@@ -435,8 +435,11 @@ public J visitMethodInvocation(J.MethodInvocation method, Integer integer) {
                     }
                     return m;
                 }
+                Object parentValue = getCursor().getParentTreeCursor().getValue();
                 if (loc == STATEMENT_PREFIX && isScope(method) &&
-                    !(getCursor().getParentTreeCursor().getValue() instanceof J.Block)) {
+                    (parentValue instanceof J.Return ||
+                     parentValue instanceof J.Assignment ||
+                     parentValue instanceof J.AssignmentOperation)) {
                     // Method invocation is used as an expression (e.g., inside return, assignment),
                     // not as a standalone statement in a block. Parse as expression replacement.
                     return autoFormat(unsubstitute(templateParser.parseExpression(
@@ -452,8 +455,11 @@ public J visitMethodInvocation(J.MethodInvocation method, Integer integer) {
             @Override
             public J visitNewClass(J.NewClass newClass, Integer p) {
                 if (isScope(newClass)) {
+                    Object parentValue = getCursor().getParentTreeCursor().getValue();
                     if (loc == STATEMENT_PREFIX &&
-                        !(getCursor().getParentTreeCursor().getValue() instanceof J.Block)) {
+                        (parentValue instanceof J.Return ||
+                         parentValue instanceof J.Assignment ||
+                         parentValue instanceof J.AssignmentOperation)) {
                         return autoFormat(unsubstitute(templateParser.parseExpression(
                                         getCursor(),
                                         substitutedTemplate,