Fixes https://github.com/SchildiChat/SchildiChat-android/issues/156 Also improves the fix for https://github.com/SchildiChat/SchildiChat-android/issues/148, since pills are rendered again and the content is discarded, as per https://spec.matrix.org/v1.3/client-server-api/#user-and-room-mentions : "Clients should display mentions differently from other elements" Change-Id: I9d05fba4110737aacdd9939480b6f78d23bd4298