Test for free space and allow 0 response

[grote]

No description provided.

[chirayudesai]

Cirrus CI Failure:

Task :app:dexBuilderDebugAndroidTest FAILED
ERROR: /tmp/cirrus-ci-build/app/build/tmp/kotlin-classes/debugAndroidTest/com/stevesoltys/seedvault/backend/saf/SafBackendTest$test, free space and create app blob without root folder$1.class: D8: com.android.tools.r8.internal.Oe: Method name 'test, free space and create app blob without root folder' in class 'com.stevesoltys.seedvault.backend.saf.SafBackendTest' cannot be represented in dex format.
ERROR: /tmp/cirrus-ci-build/app/build/tmp/kotlin-classes/debugAndroidTest/com/stevesoltys/seedvault/backend/saf/SafBackendTest.class: D8: com.android.tools.r8.internal.Oe: Method name 'test, free space and create app blob without root folder' in class 'com.stevesoltys.seedvault.backend.saf.SafBackendTest' cannot be represented in dex format.

[grote]

Trying again, they probably found a real issue there.