manifest_check.py: add uses-libraries propagaged via dexpreopt.config.

Some of the uses-libraries in the manifest are propagated from
dependencies (which are not necessarily uses-libraries themselves).
In makefiles this has to be done via dexpreopt.config files to ensure
topological order. This patch makes manifest_check.py add such
propagated entries before doing the check (as it might otherwise fail).

Also, the patch adds deduplication of added library entries.

Bug: 214255490
Test: lunch aosp_cf_x86_64_phone-userdebug && m && launch_cvd \
    && adb wait-for-device && adb root \
    && adb logcat | grep -E 'ClassLoaderContext [a-z ]+ mismatch'
    # a few unrelated errors caused by missing optional uses-libraries
    #   android.net.ipsec.ike
    #   androidx.window.extensions
    #   androidx.window.sidecar
    # that were present before this patch
Change-Id: Ic8528dffd47fa5818b38b912cd6b606855480e33