Move tailrecPhase before defaultArgumentStubPhase

So that default values can be copied to the recursive call sites.

compiler/testData/codegen/box/diagnostics/functions/tailRecursion/defaultArgs2.kt

@@ -0,0 +1,15 @@
+// DONT_RUN_GENERATED_CODE: JS
+
+tailrec fun test(x : Int = 0, e : Any = "a") {
+    if (x < 100000 && !e.equals("a")) {
+        throw IllegalArgumentException()
+    }
+    if (x > 0) {
+        test(x - 1)
+    }
+}
+
+fun box() : String {
+    test(100000, "b")
+    return "OK"
+}