Set min_sdk_version for the Widevine APEX

also remove `use_vndk_as_stable: true` to remove dependency to VNDK
libs.

Bug: 251299786
Test: build WV APEX with V and install it on U device
Change-Id: Ie7f7f9b699119478d4b33f95ab9e6ba7f459346c

libwvdrmengine/Android.bp

@@ -94,6 +94,7 @@ cc_defaults {
     name: "common_widevine_service-multilib-defaults-aidl",
     owner: "widevine",
     proprietary: true,
+    min_sdk_version: "UpsideDownCake",
     relative_install_path: "hw",
     include_dirs: [
         "vendor/widevine/libwvdrmengine/cdm/core/include/",
@@ -224,6 +225,7 @@ cc_library_static {
         "libcrypto",
         "liblog",
     ],
+    min_sdk_version: "UpsideDownCake",
 }
 
 // ----------------------------------------------------------------------------
@@ -285,6 +287,7 @@ cc_library {
     owner: "widevine",
 
     proprietary: true,
+    min_sdk_version: "UpsideDownCake",
 }
 
 phony {