[java-annotations] getOrDefault 2nd parameter is marked as nullable

Fixes IDEA-367387 Mismatch between IDEA and JSpecify on HashMap.getDefault(...) nullness

GitOrigin-RevId: 6e90dcdac5b61aa91431f96d007261ad448ea522

java/java-tests/testData/inspection/dataFlow/fixture/JSpecifyGetOrDefault.java

@@ -0,0 +1,13 @@
+import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
+
+import java.util.HashMap;
+
+@NullMarked
+class Main {
+  HashMap<String, String> map = new HashMap<>();
+
+  public @Nullable String example() {
+    return map.getOrDefault("key", null);
+  }
+}

java/java-tests/testSrc/com/intellij/java/codeInspection/DataFlowInspection21Test.java

@@ -160,4 +160,10 @@ public class DataFlowInspection21Test extends DataFlowInspectionTestCase {
     setupTypeUseAnnotations("org.jspecify.annotations", myFixture);
     doTest();
   }
+
+  public void testJSpecifyGetOrDefault() {
+    addJSpecifyNullMarked(myFixture);
+    setupTypeUseAnnotations("org.jspecify.annotations", myFixture);
+    doTest();
+  }
 }

java/jdkAnnotations/java/util/annotations.xml

@@ -3216,6 +3216,9 @@
       <val name="pure" val="true"/>
     </annotation>
   </item>
+  <item name='java.util.HashMap V getOrDefault(java.lang.Object, V) 1'>
+    <annotation name='org.jetbrains.annotations.Nullable'/>
+  </item>
   <item name='java.util.HashSet HashSet()'>
     <annotation name='org.jetbrains.annotations.Contract'>
       <val name="pure" val="true"/>