[baseline] Enable concurrent sparkplug on future

Bug: v8:12054
Change-Id: I492ceb377eb0e38f249f76e9f2a5cb554781652c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3291321
Commit-Queue: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77980}

src/flags/flag-definitions.h

@@ -717,6 +717,7 @@ DEFINE_BOOL(concurrent_sparkplug, false,
 DEFINE_BOOL(baseline_batch_compilation, false, "batch compile Sparkplug code")
 DEFINE_BOOL_READONLY(concurrent_sparkplug, false,
                      "compile Sparkplug code in a background thread")
+DEFINE_WEAK_IMPLICATION(future, concurrent_sparkplug)
 #endif
 DEFINE_STRING(sparkplug_filter, "*", "filter for Sparkplug baseline compiler")
 DEFINE_BOOL(sparkplug_needs_short_builtins, false,