Hosts are not supposed to rely on the ordering of import assertions list
received from V8. Thus, as a simplification, remove the sorting of the
import assertions passed to the HostImportModuleDynamically callback.

Update the corresponding test so that it doesn't require any particular
ordering of assertions.

Import asssertions for static imports will continue to be sorted. These
need to have a consistent ordering for purposes of deduplication in
SourceTextModuleDescriptor::module_requests_, so removing sorting of
these wouldn't simplify much.

Bug: v8:10958
Change-Id: I2cb07c4e68f24fa45152bf3f4321938bf94d84ba
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2653170Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Mythri Alle <mythria@chromium.org>
Commit-Queue: Dan Clark <daniec@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#72445}