Fix another round of test failures
Fix another round of test failures

'blocked' is *not* a fatal situation when opening or deleting databases.

matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk,matrix-org/matrix-js-sdk,matrix-org/matrix-js-sdk,krombel/matrix-js-sdk