ci/android: get aapt from the build-tools from Google instead of Debian

The aapt package form Debian might not be recent enough to install the
packages from Android CTS.

Resulting in an error like:

```
03:12:09.302: Module(s) with run failure(s):
03:12:09.302:     x86_64 CtsGraphicsTestCases: com.android.tradefed.targetprep.TargetSetupError[AAPT_PARSER_FAILED|520050|DEPENDENCY_ISSUE]: AaptParser failed for file CtsGraphicsTestCases.apk. The APK won't be installed
```

So get aapt from the build-tools matching the ANDROID_SDK_VERSION
corresponding to the Android version and CTS version used in the tests,
to ensure compatibility.

This effectively reverts the changes from commit b3c07fe722
(ci/android: Use aapt from Debian packages, 2025-04-21), but moving the
code around a bit.

The build-tools are not taken as LAVA overlay because LAVA is not able
to handle zip files, and the file in not big enough to be worth any
repacking effort.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35688>

.gitlab-ci/container/debian/x86_64_test-android.sh

@@ -30,7 +30,6 @@ EPHEMERAL=(
 )
 
 DEPS=(
-    aapt
     iproute2
 )
 apt-get install -y --no-remove --no-install-recommends \
@@ -57,6 +56,12 @@ curl -L --retry 4 -f --retry-all-errors --retry-delay 60 \
   -o vulkaninfo "https://${S3_HOST}/${S3_ANDROID_BUCKET}/mesa/mesa/${DATA_STORAGE_PATH}/vulkaninfo-android-x86_64"
 chmod +x vulkaninfo
 
+curl -L --retry 4 -f --retry-all-errors --retry-delay 60 \
+  -o "build-tools_r${ANDROID_SDK_VERSION}-linux.zip" "https://dl.google.com/android/repository/build-tools_r${ANDROID_SDK_VERSION}-linux.zip"
+unzip "build-tools_r${ANDROID_SDK_VERSION}-linux.zip"
+rm "build-tools_r${ANDROID_SDK_VERSION}-linux.zip"
+mv "android-$ANDROID_VERSION" build-tools
+
 popd
 
 section_end android-tools