Improve support of 'lateinit' modifier

- Allow 'lateinit' for inline classes which underlying type
is suitable for 'lateinit'

- K2: report all problems related to 'lateinit' modifier

^KT-55052: Fixed

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

@@ -0,0 +1,69 @@
+// WITH_STDLIB
+// WORKS_WHEN_VALUE_CLASS
+// LANGUAGE: +ValueClasses, +InlineLateinit
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class IC1(val x: String)
+
+lateinit var a: IC1
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class IC2<T : Number>(val x: T)
+
+class MyClass {
+    lateinit var b: IC2<Int>
+
+    fun isInit() = ::b.isInitialized
+}
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class IC3<T>(val x: Comparable<T>)
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class IC4(val x: IC1)
+
+lateinit var c: IC4
+
+inline fun <reified T> assertThrows(block: () -> Unit): Boolean {
+    try {
+        block.invoke()
+    } catch (t: Throwable) {
+        return t is T
+    }
+    return false
+}
+
+fun box(): String {
+    if (::a.isInitialized) return "Fail 1.1"
+    if (!assertThrows<UninitializedPropertyAccessException> { val t = a }) return "Fail 1.2"
+    a = IC1("a")
+    if (!::a.isInitialized) return "Fail 1.3"
+    if (a.x != "a") return "Fail 1.4"
+
+    val inst = MyClass()
+    if (inst.isInit()) return "Fail 2.1"
+    if (!assertThrows<UninitializedPropertyAccessException> { val t = inst.b }) return "Fail 2.2"
+    inst.b = IC2(42)
+    if (!inst.isInit()) return "Fail 2.3"
+    if (inst.b.x != 42) return "Fail 2.4"
+
+    lateinit var z: IC3<Double>
+    if (!assertThrows<UninitializedPropertyAccessException> { val t = z }) return "Fail 3.1"
+    z = IC3(5.0)
+    if (z.x != 5.0) return "Fail 3.2"
+
+    if (::c.isInitialized) return "Fail 4.1"
+    if (!assertThrows<UninitializedPropertyAccessException> { val t = c }) return "Fail 4.2"
+    c = IC4(IC1("c"))
+    if (!::c.isInitialized) return "Fail 4.3"
+    if (c.x.x != "c") return "Fail 4.4"
+
+    return "OK"
+}
+
+//CHECK_BYTECODE_TEXT
+// JVM_IR_TEMPLATES
+// 0 INVOKESTATIC IC1.box-impl
+// 0 INVOKESTATIC IC2.box-impl
+// 0 INVOKESTATIC IC3.box-impl
+// 0 INVOKESTATIC IC4.box-impl