[Verify Session] Design fixes (#230)

* Design fixes.

* Make text in emoji items secondary color and the snackbar duration short again

* Try to make margins smaller on smaller displays

---------

Co-authored-by: Florian Renaud <florianr@element.io>

features/roomlist/impl/src/main/kotlin/io/element/android/features/roomlist/impl/RoomListView.kt

@@ -135,7 +135,7 @@ fun RoomListContent(
         if (state.presentVerificationSuccessfulMessage) {
             snackbarHostState.showSnackbar(
                 message = verificationCompleteMessage,
-                duration = SnackbarDuration.Short
+                duration = SnackbarDuration.Short,
             )
             state.eventSink(RoomListEvents.ClearSuccessfulVerificationMessage)
         }
@@ -194,8 +194,6 @@ fun RoomListContent(
            SnackbarHost (snackbarHostState) { data ->
                Snackbar(
                    snackbarData = data,
-                   containerColor = MaterialTheme.colorScheme.surfaceVariant,
-                   contentColor = MaterialTheme.colorScheme.primary
                )
            }
         },