refactor: Equals avoids null

Use this link to re-run the recipe: https://app.moderne.io/recipes/org.openrewrite.staticanalysis.EqualsAvoidsNull?organizationId=ODQ2MGExMTUtNDg0My00N2EwLTgzMGMtNGE1NGExMTBmZDkw

Co-authored-by: Moderne <team@moderne.io>

Author: timtebeek

rewrite-python/src/main/java/org/openrewrite/python/internal/PythonPrinter.java

@@ -916,7 +916,7 @@ public J visitBlock(J.Block block, PrintOutputCapture<P> p) {
         public J visitCase(J.Case ca, PrintOutputCapture<P> p) {
             beforeSyntax(ca, Location.CASE_PREFIX, p);
             J elem = ca.getCaseLabels().get(0);
-            if (!(elem instanceof J.Identifier) || !((J.Identifier) elem).getSimpleName().equals("default")) {
+            if (!(elem instanceof J.Identifier) || !"default".equals(((J.Identifier) elem).getSimpleName())) {
                 p.append("case");
             }
             visitContainer("", ca.getPadding().getCaseLabels(), JContainer.Location.CASE_EXPRESSION, ",", "", p);