Force all temp artifacts to out/dist.

This way they don't end up in the final build, and will be in a single
predictable place.

+bump the extension SDK version to 7

Bug: 271806061
Test: run locally
Change-Id: Iaf4d918a269cdb7c79a53b7df9592bf8205e0305

tools/finalization/build-step-1.sh

@@ -6,9 +6,6 @@ function finalize_main_step1() {
     local top="$(dirname "$0")"/../../../..
     source $top/build/make/tools/finalization/environment.sh
 
-    # default target to modify tree and build SDK
-    local m="$top/build/soong/soong_ui.bash --make-mode TARGET_PRODUCT=aosp_arm64 TARGET_BUILD_VARIANT=userdebug"
-
     # Build finalization artifacts.
     source $top/build/make/tools/finalization/finalize-aidl-vndk-sdk-resources.sh
 }