Drop host variant of lidbexfile in >=V snapshots

The host variant of libdexfile and its deps were added to module sdk to
support the use case of building platform tests without art's source
code. This use case is not very relevant today, so we can drop the host
variant of these modules from the module sdk.

We still need to keep them in <= U snapshots, so this CL uses a hack to
drop these libraries only if `SOONG_SDK_SNAPSHOT_TARGET_BUILD_RELEASE`
is greater than UDC

Test: SOONG_SDK_SNAPSHOT_TARGET_BUILD_RELEASE=UpsideDownCake m
out/soong/mainline-sdks/art-module-host-exports-current.zip # verified
that libartbase is in the generated Android.bp

Test: m out/soong/mainline-sdks/art-module-host-exports-current.zip #
verified that libartbase is not in the generated Android.bp

Test: In `main`, deleted the host variants from prebuilts/module_sdk locally; enabled art prebuilts;
Test: atest --host --no-bazel-mode libunwindstack_unit_test

Bug: 329830257

Change-Id: Iab23853ef5e96661a5f5c2989add1be32fb07fbc