[FIR] Support of importing optional annotation classes (JS/Native), ^KT-51757 Fixed

compiler/testData/diagnostics/tests/imports/OptionalAnnotationClasses.kt

@@ -0,0 +1,13 @@
+// FIR_IDENTICAL
+// WITH_STDLIB
+
+@file:Suppress("OPTIONAL_DECLARATION_USAGE_IN_NON_COMMON_SOURCE")
+
+import kotlin.js.*
+import kotlin.native.concurrent.*
+
+@JsName("")
+public fun test() {}
+
+@SharedImmutable
+private val EmptyArray: Array<Int> = arrayOf()

compiler/testData/diagnostics/tests/imports/OptionalAnnotationClasses.txt

@@ -0,0 +1,4 @@
+package
+
+@kotlin.native.concurrent.SharedImmutable private val EmptyArray: kotlin.Array<kotlin.Int>
+@kotlin.js.JsName(name = "") public fun test(): kotlin.Unit