K2: Don't report BUILDER_INFERENCE_STUB_RECEIVER for members of Any

This commit actually does two things:
- Adds Any scope to stub type
- Makes CheckDispatchReceiver treat stub types
as non-null for the unsafe call check to make such candidates viable

Related to KT-59369

compiler/testData/diagnostics/testsWithStdLib/coroutines/inference/kt36220.fir.kt

@@ -1,19 +0,0 @@
-// !OPT_IN: kotlin.RequiresOptIn
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-
-import kotlin.experimental.ExperimentalTypeInference
-
-class TypeDefinition<KotlinType : Any> {
-    fun parse(parser: (serializedValue: String) -> KotlinType?): Unit = TODO()
-    fun serialize(parser: (value: KotlinType) -> Any?): Unit = TODO()
-}
-
-@OptIn(ExperimentalTypeInference::class)
-fun <KotlinType : Any> defineType(definition: TypeDefinition<KotlinType>.() -> Unit): Unit = TODO()
-
-fun main() {
-    defineType {
-        parse { it.toInt() }
-        serialize { <!BUILDER_INFERENCE_STUB_RECEIVER!>it.toString()<!> }
-    }
-}

compiler/testData/diagnostics/testsWithStdLib/coroutines/inference/kt36220.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !OPT_IN: kotlin.RequiresOptIn
 // !DIAGNOSTICS: -UNUSED_PARAMETER