Assume room should be unencrypted if homeserver does not implement keys/query
Assume room should be unencrypted if homeserver does not implement keys/query

Dendrite (and others) do not support key fetching (or indeed, E2E at all). Rather than failing to create a room at all, leave it unencrypted. Fixes #13598
matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk,matrix-org/matrix-react-sdk