Fix Android SDK installation path in CI container

- Changed Android SDK installation location to `/opt/android/sdk` to avoid `AndroidGradleBuilder` path resolution issues which occur when `ANDROID_HOME` name is not "sdk".
- Set `ANDROID_HOME` to `/opt/android/sdk`.
- Updated `.ci/container/Dockerfile` accordingly.
- Added `packages: read` permissions to CI workflows to allow pulling the container image.
- Separated Java 25 installation to allow failure without breaking the entire build.
- Added Java 11 support to workflows.

Author: google-labs-jules[bot]

.ci/container/Dockerfile

@@ -56,7 +56,7 @@ RUN apt-get install -y \
 RUN apt-get install -y zulu25-jdk || echo "zulu25-jdk install failed, proceeding without it"
 
 # Android SDK
-ENV ANDROID_HOME=/usr/lib/android-sdk
+ENV ANDROID_HOME=/opt/android/sdk
 RUN mkdir -p ${ANDROID_HOME}/cmdline-tools && \
     wget -q https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -O /tmp/cmdline-tools.zip && \
     unzip /tmp/cmdline-tools.zip -d ${ANDROID_HOME}/cmdline-tools && \