Set ANDROID_AVD_HOME env variable (#23672)
### Description
Set ANDROID_AVD_HOME env variable
To run Android tests on Linux we need two command line tools:
1. Android avdmanager for creating AVDs
2. Android "emulator" for running AVDs
By default "avdmanager" put images in ~/.android/avd/
Android emulator by default search AVD files in the following places:
- $ANDROID_AVD_HOME
- $ANDROID_SDK_HOME/avd
- $HOME/.android/avd
However, somehow sometimes "avdmanager" put images in
"$HOME/.config/.android/avd" folder instead of "$HOME/.android/avd/ ".
Cannot explain. A lot of people have hit this issue. For example:
https://github.com/orgs/NativeScript/discussions/10546 and
https://stackoverflow.com/questions/78919031/has-android-studio-recently-changed-its-default-avd-storage-location
.
So I set the "ANDROID_AVD_HOME" environment variable to avoid such
confusions.
