Fixed KT-5315 J2K: Generate local var when parameter is being assigned

#KT-5315 Fixed

j2k/tests/testData/ast/function/parameterModification.java

@@ -0,0 +1,6 @@
+//method
+int foo(int p1, int p2, int p3) {
+    p1++;
+    if (p2 > 0) p3 = 0;
+    return p1 + p2 + p3;
+}

j2k/tests/testData/ast/function/parameterModification.kt

@@ -0,0 +1,7 @@
+fun foo(p1: Int, p2: Int, p3: Int): Int {
+    var p1 = p1
+    var p3 = p3
+    p1++
+    if (p2 > 0) p3 = 0
+    return p1 + p2 + p3
+}

j2k/tests/testData/ast/function/varVararg.kt

@@ -2,6 +2,7 @@ package demo
 
 class Test() {
     fun test(vararg args: Any) {
+        var args = args
         args = array<Int>(1, 2, 3)
     }
 }

j2k/tests/testData/ast/function/writableParameter.java

@@ -1,9 +0,0 @@
-//file
-package demo;
-
-class Test {
-  int test(int i) {
-    i = 10;
-    return i + 20;
-  }
-}

j2k/tests/testData/ast/function/writableParameter.kt

@@ -1,8 +0,0 @@
-package demo
-
-class Test() {
-    fun test(i: Int): Int {
-        i = 10
-        return i + 20
-    }
-}