Adjust type approximation to broken code and missing dependencies

- Do not run approximation if arguments number is different
- Add nullable Any? as supertype to MissingDependencyErrorClass

The latter is needed because otherwise TypeArgument.isConsistent became false

core/descriptors/src/org/jetbrains/kotlin/types/CapturedTypeApproximation.kt

@@ -117,7 +117,7 @@ public fun approximateCapturedTypes(type: KotlinType): ApproximationBounds<Kotli
             else -> throw AssertionError("Only nontrivial projections should have been captured, not: $typeProjection")
         }
     }
-    if (type.arguments.isEmpty()) {
+    if (type.arguments.isEmpty() || type.arguments.size != typeConstructor.parameters.size) {
         return ApproximationBounds(type, type)
     }
     val lowerBoundArguments = ArrayList<TypeArgument>()

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/textBuilder/missingDependencies.kt

@@ -24,6 +24,7 @@ import org.jetbrains.kotlin.descriptors.impl.PackageFragmentDescriptorImpl
 import org.jetbrains.kotlin.incremental.components.LookupLocation
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.resolve.descriptorUtil.builtIns
 import org.jetbrains.kotlin.resolve.scopes.MemberScope
 import org.jetbrains.kotlin.resolve.scopes.MemberScopeImpl
 import org.jetbrains.kotlin.types.ErrorUtils.createErrorType
@@ -63,7 +64,10 @@ internal class PackageFragmentProviderForMissingDependencies(val moduleDescripto
 private class MissingDependencyErrorClassDescriptor(
         containing: DeclarationDescriptor,
         override val fullFqName: FqName
-) : MissingDependencyErrorClass, ClassDescriptorImpl(containing, fullFqName.shortName(), Modality.OPEN, ClassKind.CLASS, listOf(), SourceElement.NO_SOURCE) {
+) : MissingDependencyErrorClass, ClassDescriptorImpl(
+        containing, fullFqName.shortName(), Modality.OPEN, ClassKind.CLASS, listOf(containing.builtIns.nullableAnyType),
+        SourceElement.NO_SOURCE
+) {
 
     private val scope = ScopeWithMissingDependencies(fullFqName, this)