[Native] Add fast check that stdlib is present in klib dependencies

Previous changes uncovered a problem with lacking of stdlib in
  dependencies, which was quite hard to debug and determine.
  So this check is supposed to discover similar issues in the future
  much more easily.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/Fir2Ir.kt

@@ -42,7 +42,9 @@ import org.jetbrains.kotlin.ir.objcinterop.IrObjCOverridabilityCondition
 import org.jetbrains.kotlin.ir.types.IrTypeSystemContextImpl
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.ir.visitors.acceptVoid
+import org.jetbrains.kotlin.konan.library.KONAN_STDLIB_NAME
 import org.jetbrains.kotlin.library.metadata.KlibMetadataFactories
+import org.jetbrains.kotlin.library.uniqueName
 import org.jetbrains.kotlin.name.NativeForwardDeclarationKind
 import org.jetbrains.kotlin.storage.LockBasedStorageManager
 
@@ -148,6 +150,11 @@ internal fun PhaseContext.fir2Ir(
         usedPackages.any { !module.packageFragmentProviderForModuleContentWithoutDependencies.isEmpty(it) }
     }.map { it.second }.toSet()
 
+    resolvedLibraries.find { it.library.uniqueName == KONAN_STDLIB_NAME }?.let {
+        require(usedLibraries.contains(it)) {
+            "Internal error: stdlib must be in usedLibraries, if it's in resolvedLibraries"
+        }
+    }
 
     val symbols = createKonanSymbols(components, pluginContext)