Make the android-test-mock-current.txt available for use by the /vendor tests

Bug: 312324146
Test: Add android-test-mock-current.txt to the Android.bp
Merged-In: I228744137f82e14bec936b11b96cb6876a392487
Change-Id: Ie895b25a6e0b70e558807d094304ea2e84425a3d

test-mock/Android.bp

@@ -54,12 +54,13 @@ java_sdk_library {
     dist_group: "android",
 }
 
-// Make the current.txt available for use by the cts/tests/signature tests.
+// Make the current.txt available for use by the cts/tests/signature and /vendor tests.
 // ========================================================================
 filegroup {
     name: "android-test-mock-current.txt",
     visibility: [
         "//cts/tests/signature/api",
+        "//vendor:__subpackages__",
     ],
     srcs: [
         "api/current.txt",