Render space pills with square corners to match new avatar (#11632)

res/css/views/elements/_Pill.pcss

@@ -89,4 +89,10 @@ limitations under the License.
         height: 16px;
         width: 16px;
     }
+
+    &.mx_SpacePill {
+        border-top-left-radius: 8px;
+        border-bottom-left-radius: 8px;
+        padding-left: 4px;
+    }
 }

src/components/views/elements/Pill.tsx

@@ -103,7 +103,7 @@ export const Pill: React.FC<PillProps> = ({ type: propType, url, inMessage, room
     const classes = classNames("mx_Pill", {
         mx_AtRoomPill: type === PillType.AtRoomMention,
         mx_RoomPill: type === PillType.RoomMention,
-        mx_SpacePill: type === "space",
+        mx_SpacePill: type === "space" || targetRoom?.isSpaceRoom(),
         mx_UserPill: type === PillType.UserMention,
         mx_UserPill_me: resourceId === MatrixClientPeg.safeGet().getUserId(),
         mx_EventPill: type === PillType.EventInOtherRoom || type === PillType.EventInSameRoom,