[FIR] Generate spread element for unsigned arrays

Previously when unsigned arrays were passed as vararg in a named form the necessary spread element wasn't generated, which resulted in a compilation error.

^KT-63514 fixed

compiler/testData/codegen/box/vararg/inlineClassArraysAsNamedArgumentInVararg.kt

@@ -0,0 +1,35 @@
+// !LANGUAGE: +AllowAssigningArrayElementsToVarargsInNamedFormForFunctions
+// ISSUE: KT-63514
+// WITH_STDLIB
+
+fun foo(vararg arr: Int): Int {
+    return arr.sum()
+}
+
+fun bar(vararg arr: UInt): UInt {
+    return arr.sum()
+}
+
+fun baz(vararg arr: ULong): ULong {
+    return arr.sum()
+}
+
+fun quas(vararg arr: UShort): UInt {
+    return arr.sum()
+}
+
+fun wex(vararg arr: UByte): UInt {
+    return arr.sum()
+}
+
+fun box(): String {
+    val x = foo(arr = intArrayOf(1, 2, 3))
+    val y = bar(arr = uintArrayOf(1u, 2u, 3u))
+    val z = baz(arr = ulongArrayOf(1uL, 2uL, 3uL))
+    val q = quas(arr = ushortArrayOf(1u, 2u, 3u))
+    val w = wex(arr = ubyteArrayOf(1u, 2u, 3u))
+    if (x + y.toInt() + z.toInt() + q.toInt() + w.toInt() == 30) {
+        return "OK"
+    }
+    return "Fail"
+}