Fix signature mapping for built-in methods inside erased inline class

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

@@ -0,0 +1,12 @@
+// !LANGUAGE: +InlineClasses
+
+inline class UInt(val x: Int)
+
+inline class UIntArray(private val storage: IntArray) : Collection<UInt> {
+    public override val size: Int get() = storage.size
+
+    override operator fun iterator() = TODO()
+    override fun contains(element: UInt): Boolean = TODO()
+    override fun containsAll(elements: Collection<UInt>): Boolean = TODO()
+    override fun isEmpty(): Boolean = TODO()
+}