OptionalToIfInspection: track flat map param name so it won't be used in another operation

GitOrigin-RevId: 42f90e621d37435cc122ee36c6b0a3267356c5e3

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/optionalToIf/afterFlatMap.java

@@ -58,6 +58,13 @@ class Test {
       }
   }
 
+  void flatMapsWithSameParamName(String param0) {
+      if (param0 == null) throw new NullPointerException();
+      String s = "foo";
+      String toLowerCase = ("foo").toLowerCase();
+      String bar = "bar";
+  }
+
   String flatMapWithOrInside() {
       Object o1 = null;
       String empty = null;