Lazy initialize some data once.

$ python -u tools/run_perf.py --binary-override-path   out/x64.release/d8 --filter "JSTests/Intl"   test/js-perf-test/JSTests.json
INFO      >>> Running suite: JSTests/Intl
INFO      >>> Stdout (#1):
NewIntlCollator-Intl(Score): 2047
NewIntlDateTimeFormat-Intl(Score): 26.5
NewIntlNumberFormat-Intl(Score): 449
NewIntlPluralRules-Intl(Score): 670
NewIntlListFormat-Intl(Score): 1762
NewIntlRelativeTimeFormat-Intl(Score): 918


Compare to performance baseline scores in
https://chromium-review.googlesource.com/c/v8/v8/+/1455717

Bug: chromium:928098
Change-Id: I7f213f50eb261474fb38d9592725a101939020d8
Reviewed-on: https://chromium-review.googlesource.com/c/1455727
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59425}