Fix inline class coercion in string template with StringBuilder.append

Inline class values with array as a carrier type were not boxed.

 #KT-27113

compiler/testData/codegen/box/inlineClasses/kt27113.kt

@@ -0,0 +1,19 @@
+// !LANGUAGE: +InlineClasses
+// IGNORE_BACKEND: JS, JS_IR, JVM_IR
+// WITH_RUNTIME
+
+class CharacterLiteral(private val prefix: NamelessString, private val s: NamelessString) {
+    override fun toString(): String = "$prefix'$s'"
+}
+
+inline class NamelessString(val b: ByteArray) {
+    override fun toString(): String = String(b)
+}
+
+fun box(): String {
+    val ns1 = NamelessString("abc".toByteArray())
+    val ns2 = NamelessString("def".toByteArray())
+    val cl = CharacterLiteral(ns1, ns2)
+    if (cl.toString() != "abc'def'") return throw AssertionError(cl.toString())
+    return "OK"
+}

compiler/testData/codegen/box/inlineClasses/kt27113a.kt

@@ -0,0 +1,15 @@
+// !LANGUAGE: +InlineClasses
+// IGNORE_BACKEND: JVM_IR
+// WITH_RUNTIME
+
+inline class A(val a: Any)
+
+inline class NA(val b: Any?)
+
+fun box(): String {
+    val ns1 = NA(A("abc"))
+    val ns2 = NA(null)
+    val t = "-$ns1-$ns2-"
+    if (t != "-NA(b=A(a=abc))-NA(b=null)-") return throw AssertionError(t)
+    return "OK"
+}