[snapshot] Ship lazy TFJ builtins under --future

Bug: v8:6624
Change-Id: I98e055936a556ee607e286354dfa40a28b249dd9
Reviewed-on: https://chromium-review.googlesource.com/663542Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47987}

src/flag-definitions.h

@@ -268,6 +268,7 @@ DEFINE_BOOL(future, FUTURE_BOOL,
             "not-too-far future")
 
 DEFINE_IMPLICATION(future, preparser_scope_analysis)
+DEFINE_IMPLICATION(future, lazy_deserialization)
 
 // Flags for experimental implementation features.
 DEFINE_BOOL(allocation_site_pretenuring, true,