Overridden functions using default arguments in recursive call are no more considered tail recursive #KT-4285 Fixed

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

@@ -0,0 +1,11 @@
+open class A {
+    open fun foo(s: String = "OK") = s
+}
+
+class B : A() {
+    <!NO_TAIL_CALLS_FOUND!>override tailrec fun foo(s: String): String<!> {
+        return if (s == "OK") s else foo()
+    }
+}
+
+fun box() = B().foo("FAIL")

compiler/testData/codegen/box/diagnostics/functions/tailRecursion/defaultArgsOverridden.txt

@@ -0,0 +1,19 @@
+package
+
+public fun box(): kotlin.String
+
+public open class A {
+    public constructor A()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open fun foo(/*0*/ s: kotlin.String = ...): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class B : A {
+    public constructor B()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open tailrec override /*1*/ fun foo(/*0*/ s: kotlin.String = ...): kotlin.String
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}