OptionalUtil#getMapTypeArgument: support PsiEmptyExpressionImpl input

Fixes EA-125157 - IOE: PsiJavaParserFacadeImpl.createExpressionFromText

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/collect/afterCollectIncomplete.java

@@ -0,0 +1,11 @@
+// "Replace with collect" "true"
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Main {
+  void test(List<String> list) {
+    List<String> result = list.stream().map(s ->).collect(Collectors.toList());
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/collect/beforeCollectIncomplete.java

@@ -0,0 +1,13 @@
+// "Replace with collect" "true"
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+  void test(List<String> list) {
+    List<String> result = new ArrayList<>();
+    f<caret>or (String s : list) {
+      result.add(;
+    }
+  }
+}