Extend same approach for FastJSArray to FastJSArrayForRead in ArrayMap builtin

~6x perf improvement in micro-benchmark JSTests/ObjectFreeze
Before:
ArrayMap
ArrayMap-Numbers(Score): 0.0887

After:
ArrayMap
ArrayMap-Numbers(Score): 0.531

Bug: v8:6831
Change-Id: I06cba44ca4c9198977c6da522b782b61f9df04fa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1653732
Commit-Queue: Z Nguyen-Huu <duongn@microsoft.com>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62127}