OmitDeep: Fix internally imported type (#824)

Author: tommy-mitchell

source/merge-deep.d.ts

@@ -15,7 +15,7 @@ import type {EnforceOptional} from './enforce-optional';
 /**
 Deeply simplifies an object excluding iterables and functions. Used internally to improve the UX and accept both interfaces and type aliases as inputs.
 */
-type SimplifyDeep<Type> = ConditionalSimplifyDeep<Type, Function | Iterable<unknown>, object>;
+export type SimplifyDeep<Type> = ConditionalSimplifyDeep<Type, Function | Iterable<unknown>, object>;
 
 /**
 Try to merge two record properties or return the source property value, preserving `undefined` properties values in both cases.