use a text span with a recognizer instead of a WidgetSpan

Fixes displaynames not ellipsising properly

lib/helpers/hooks/tap_recognizer.dart

@@ -0,0 +1,11 @@
+import "package:flutter/gestures.dart";
+import "package:flutter_hooks/flutter_hooks.dart";
+
+/// A recognizer for a tappable span in text, like a name, disposed with the
+/// widget.
+TapGestureRecognizer useTapRecognizer() {
+  final recognizer = useMemoized(TapGestureRecognizer.new);
+  useEffect(() => recognizer.dispose, [recognizer]);
+
+  return recognizer;
+}