Try making the apparent type of unknown be unknown

Author: jakebailey

src/compiler/checker.ts

@@ -12304,7 +12304,7 @@ namespace ts {
                 t.flags & TypeFlags.ESSymbolLike ? getGlobalESSymbolType(/*reportErrors*/ languageVersion >= ScriptTarget.ES2015) :
                 t.flags & TypeFlags.NonPrimitive ? emptyObjectType :
                 t.flags & TypeFlags.Index ? keyofConstraintType :
-                t.flags & TypeFlags.Unknown && !strictNullChecks ? emptyObjectType :
+                // t.flags & TypeFlags.Unknown && !strictNullChecks ? emptyObjectType :
                 t;
         }