[java-intentions] DefineParamsDefaultValueAction: fix cast for vararg type

GitOrigin-RevId: 09705b6a78f4f07c0f62c5642ccd23853b2ba7f8

java/java-impl/src/com/intellij/codeInsight/daemon/impl/quickfix/DefineParamsDefaultValueAction.java

@@ -108,7 +108,7 @@ public final class DefineParamsDefaultValueAction extends PsiBasedModCommandActi
     final String callArgs =
       "(" + StringUtil.join(parameterList.getParameters(), psiParameter -> {
         if (ArrayUtil.find(parameters, psiParameter) > -1) {
-          PsiType type = psiParameter.getType();
+          PsiType type = GenericsUtil.getVariableTypeByExpressionType(psiParameter.getType());
           String defaultValue = TypeUtils.getDefaultValue(type);
           return defaultValue.equals(PsiKeyword.NULL) ? "(" + type.getCanonicalText() + ")null" : defaultValue;
         }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/delegateWithDefaultValue/afterHasOverloadVarArg.java

@@ -0,0 +1,10 @@
+// "Generate overloaded method with default parameter values" "true"
+class Test {
+    void method() {
+        method((String[]) null);
+    }
+
+    void method(String... s) {}
+  
+  void method(Integer i) {}
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/delegateWithDefaultValue/beforeHasOverloadVarArg.java

@@ -0,0 +1,6 @@
+// "Generate overloaded method with default parameter values" "true"
+class Test {
+  void m<caret>ethod(String... s) {}
+  
+  void method(Integer i) {}
+}