add constructor params: collect new names to prevent conflicts (IDEA-92902)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/createConstructorParameterFromField/afterSameParameterSimpleNames.java

@@ -0,0 +1,10 @@
+// "Add constructor parameters" "true"
+class A {
+  private final int _field;
+  private final int field;
+  A(int field, int field1) {
+      _field = field;
+      this.field = field1;
+  }
+
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/createConstructorParameterFromField/beforeSameParameterSimpleNames.java

@@ -0,0 +1,8 @@
+// "Add constructor parameters" "true"
+class A {
+  private final int <caret>_field;
+  private final int field;
+  A() {
+  }
+
+}