[Fuchsia] Use optimize_max on Fuchsia

V8 was compiled for Fuchsia with optimize_speed instead of optimize_max
used on most other platfroms. There is no reason Fuchsia needs to be
different, so it's better to use optimize_max. It also allows to save
about 1MB on the binary size.

Bug: chromium:1343990
Change-Id: Ie4a07fbbfd8100def61bf7709d2c4e6cb74209f4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3759647
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Anton Bikineev <bikineev@chromium.org>
Auto-Submit: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/main@{#81698}

gni/v8.gni

@@ -154,7 +154,7 @@ if (is_debug && !v8_optimized_debug) {
 
   # TODO(crbug.com/621335) Rework this so that we don't have the confusion
   # between "optimize_speed" and "optimize_max".
-  if (((is_posix && !is_android) || is_fuchsia) && !using_sanitizer) {
+  if ((is_posix && !is_android) && !using_sanitizer) {
     v8_add_configs += [ "//build/config/compiler:optimize_speed" ]
   } else {
     v8_add_configs += [ "//build/config/compiler:optimize_max" ]