Implement proper contract for generated java.lang.Annotation.hashCode()

#KT-48606 Fixed

compiler/testData/codegen/box/annotations/instances/annotationJvmHashCode.kt

@@ -0,0 +1,35 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+// TARGET_BACKEND: JVM_IR
+
+// WITH_RUNTIME
+// !LANGUAGE: +InstantiationOfAnnotationClasses
+
+import kotlin.reflect.KClass
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue as assert
+
+annotation class ZeroArg()
+
+annotation class OneArg(val arg: String)
+
+annotation class ManyArg(val i: Int, val o: OneArg, val z: Boolean, val k: KClass<*>, val e: IntArray)
+
+@ZeroArg
+@OneArg("a")
+@ManyArg(42, OneArg("b"), true, OneArg::class, intArrayOf(1, 2, 3))
+class Target
+
+fun box(): String {
+    val reflectiveZero = Target::class.java.getAnnotation(ZeroArg::class.java)
+    val reflectiveOne = Target::class.java.getAnnotation(OneArg::class.java)
+    val reflectiveMany = Target::class.java.getAnnotation(ManyArg::class.java)
+
+    val createdZero = ZeroArg()
+    val createdOne = OneArg("a")
+    val createdMany = ManyArg(42, OneArg("b"), true, OneArg::class, intArrayOf(1, 2, 3))
+
+    assertEquals(reflectiveZero.hashCode(), createdZero.hashCode(), "zero")
+    assertEquals(reflectiveOne.hashCode(), createdOne.hashCode(), "one")
+    assertEquals(reflectiveMany.hashCode(), createdMany.hashCode(), "many")
+    return "OK"
+}