DO NOT MERGE: Drop prebuilt files to android source tree.

The following files have been updated as part of this change:

current/Android.bp
current/snapshot-creation-build-number.txt
current/hiddenapi/annotation-flags.csv
current/hiddenapi/filtered-flags.csv
current/hiddenapi/filtered-stub-flags.csv
current/hiddenapi/index.csv
current/hiddenapi/metadata.csv
current/hiddenapi/signature-patterns.csv
current/licenses/build/soong/licenses/LICENSE
current/sdk_library/system/framework-sdkextensions-removed.txt
current/sdk_library/system/framework-sdkextensions-stubs.jar
current/sdk_library/system/framework-sdkextensions.srcjar
current/sdk_library/system/framework-sdkextensions.txt
current/sdk_library/system/framework-sdkextensions_annotations.zip
current/sdk_library/public/framework-sdkextensions-removed.txt
current/sdk_library/public/framework-sdkextensions-stubs.jar
current/sdk_library/public/framework-sdkextensions.srcjar
current/sdk_library/public/framework-sdkextensions.txt
current/sdk_library/public/framework-sdkextensions_annotations.zip
current/sdk_library/module-lib/framework-sdkextensions-removed.txt
current/sdk_library/module-lib/framework-sdkextensions-stubs.jar
current/sdk_library/module-lib/framework-sdkextensions.srcjar
current/sdk_library/module-lib/framework-sdkextensions.txt
current/sdk_library/module-lib/framework-sdkextensions_annotations.zip

Built here: ab/T1010169

This build IS suitable for public release.

The change is generated with prebuilt drop tool.

Test: presubmit
Bug: 353521088
Flag: build.RELEASE_APEX_CONTRIBUTIONS_SDKEXTENSIONS
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:bf034c825a2e5deb79ac3646bf09dc4987c99213)
Merged-In: I8bd1f62cd1e41df80935b1e5fdd09622ba889898
Change-Id: I8bd1f62cd1e41df80935b1e5fdd09622ba889898

.prebuilt_info/prebuilt_info_current_current_zip.asciipb

 drops {
   android_build_drop {
-    build_id: "T1010168"
+    build_id: "T1010169"
     target: "train_build"
     source_file: "mainline-sdks/for-latest-build/current/com.google.android.sdkext/sdk/sdkextensions-sdk-current.zip"
   }

current/snapshot-creation-build-number.txt

-12064335
\ No newline at end of file
+12091403
\ No newline at end of file