do not infer @NotNull for final fields with initializer (IDEA-75616)

java/java-impl/src/com/intellij/codeInspection/inferNullity/NullityInferrer.java

@@ -150,6 +150,7 @@ public class NullityInferrer {
       final PsiModifierListOwner element = pointer.getElement();
       if (element != null) {
         if (shouldIgnore(element)) continue;
+        if (element instanceof PsiField && ((PsiField)element).hasInitializer() && element.hasModifierProperty(PsiModifier.FINAL)) continue;
         new AddAnnotationFix(manager.getDefaultNotNull(), element, manager.getDefaultNullable()).invoke(project, null,
                                                                                                         element.getContainingFile());
       }

java/java-tests/testData/codeInsight/nullityinferrer/afterFieldsAssignment.java

@@ -32,6 +32,12 @@ class Test {
   @Nullable
   final String myFoo10;
 
+  final String myFoo11 = "";
+  @NotNull
+  final String myFoo12;
+  @Nullable
+  final String myFoo13 = null;
+
   /**
    * {@link #myFoo6}
    */
@@ -42,6 +48,7 @@ class Test {
     myFoo8 = paramNullable;
     myFoo9 = simpleParam;
     myFoo10 = foo10(false);
+    myFoo12 = "";
   }
 
   @Nullable

java/java-tests/testData/codeInsight/nullityinferrer/beforeFieldsAssignment.java

@@ -23,6 +23,10 @@ class Test {
   final String myFoo9;
   final String myFoo10;
 
+  final String myFoo11 = "";
+  final String myFoo12;
+  final String myFoo13 = null;
+
   /**
    * {@link #myFoo6}
    */
@@ -33,6 +37,7 @@ class Test {
     myFoo8 = paramNullable;
     myFoo9 = simpleParam;
     myFoo10 = foo10(false);
+    myFoo12 = "";
   }
 
   String foo10(boolean flag) {