LambdaGenerationUtil: disable if expression is accessed for writing

Fixes IDEA-165482 Optional.isPresent suggests to replace the code which assigns the variable defined outside

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/optionalIsPresent/beforeAssignmentIncomplete.java

@@ -0,0 +1,13 @@
+// "Replace Optional.isPresent() condition with functional style expression" "false"
+
+import java.util.Optional;
+
+public class Main {
+  void assignVariable(Optional<Object> opt) {
+    String s;
+    if(opt.isPre<caret>sent()) {
+      s = opt.get().toString();
+    }
+    String s2 = s;
+  }
+}