add tests for private signatures

regenerate tests

add test for EnumEntry's argument declarations

add another test

regenerate test

fix test a bit

compiler/testData/codegen/box/ir/privateSignatures/enumEntryArguments.kt

@@ -0,0 +1,41 @@
+// SKIP_MANGLE_VERIFICATION
+
+// MODULE: lib
+// FILE: l.kt
+
+interface I {
+    fun foo(): String
+}
+
+enum class E(val i: I, val l: () -> String) {
+    A(object : I {
+        override fun foo(): String = "AI"
+    }, { "AL" }) ,
+    B(object : I {
+        override fun foo(): String = "BI"
+    }, { "BL" }),
+    C(object : I {
+        override fun foo(): String = "CI"
+    }, { "CL" })
+}
+
+// MODULE: main(lib)
+// FILE: m.kt
+
+
+fun box(): String {
+    var result = ""
+
+    result += E.A.i.foo()
+    result += E.A.l()
+
+    result += E.B.i.foo()
+    result += E.B.l()
+
+    result += E.C.i.foo()
+    result += E.C.l()
+
+    if (result != "AIALBIBLCICL") return "FAIL: $result"
+
+    return "OK"
+}