https://github.com/tc39/proposal-logical-assignment/pull/24 reached
consensus in June TC39.

Drive-by refactoring of testing for logical assignment ops using
IsInRange.

Bug: v8:10579
Change-Id: I5a203ba552a905cd28f75c5d223998431a1966ce
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2225809Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68101}