Prohibit properties with backing fields inside inline classes

compiler/testData/diagnostics/tests/inlineClasses/propertiesWithBackingFieldsInsideInlineClass.kt

@@ -0,0 +1,34 @@
+// !LANGUAGE: +InlineClasses
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+interface A {
+    val goodSize: Int
+}
+
+interface B {
+    val badSize: Int
+}
+
+inline class Foo(val x: Int) : A, B {
+    val a0
+        get() = 0
+
+    <!PROPERTY_WITH_BACKING_FIELD_INSIDE_INLINE_CLASS!>val a1<!> = 0
+
+    var a2: Int
+        get() = 1
+        set(value) {}
+
+    <!PROPERTY_WITH_BACKING_FIELD_INSIDE_INLINE_CLASS!>var a3: Int<!> = 0
+        get() = 1
+        set(value) {
+            field = value
+        }
+
+    override val goodSize: Int
+        get() = 0
+
+    <!PROPERTY_WITH_BACKING_FIELD_INSIDE_INLINE_CLASS!>override val badSize: Int<!> = 0
+
+    <!PROPERTY_WITH_BACKING_FIELD_INSIDE_INLINE_CLASS!>lateinit var lateinitProperty: String<!>
+}

compiler/testData/diagnostics/tests/inlineClasses/propertiesWithBackingFieldsInsideInlineClass.txt

@@ -0,0 +1,30 @@
+package
+
+public interface A {
+    public abstract val goodSize: kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface B {
+    public abstract val badSize: kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final inline class Foo : A, B {
+    public constructor Foo(/*0*/ x: kotlin.Int)
+    public final val a0: kotlin.Int
+    public final val a1: kotlin.Int = 0
+    public final var a2: kotlin.Int
+    public final var a3: kotlin.Int
+    public open override /*1*/ val badSize: kotlin.Int = 0
+    public open override /*1*/ val goodSize: kotlin.Int
+    public final lateinit var lateinitProperty: kotlin.String
+    public final val x: kotlin.Int
+    public open override /*2*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*2*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*2*/ /*fake_override*/ fun toString(): kotlin.String
+}