Predict typing indicator (#29551)

It greatly annoys me in the rare instance I do play.

Content.Server/Chat/TypingIndicator/TypingIndicatorSystem.cs

@@ -1,64 +1,7 @@
-using Content.Shared.ActionBlocker;
 using Content.Shared.Chat.TypingIndicator;
-using Robust.Shared.Player;
 
 namespace Content.Server.Chat.TypingIndicator;
 
-// Server-side typing system
-// It receives networked typing events from clients
-// And sync typing indicator using appearance component
 public sealed class TypingIndicatorSystem : SharedTypingIndicatorSystem
 {
-    [Dependency] private readonly ActionBlockerSystem _actionBlocker = default!;
-    [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
-
-    public override void Initialize()
-    {
-        base.Initialize();
-        SubscribeLocalEvent<PlayerAttachedEvent>(OnPlayerAttached);
-        SubscribeLocalEvent<TypingIndicatorComponent, PlayerDetachedEvent>(OnPlayerDetached);
-        SubscribeNetworkEvent<TypingChangedEvent>(OnClientTypingChanged);
-    }
-
-    private void OnPlayerAttached(PlayerAttachedEvent ev)
-    {
-        // when player poses entity we want to make sure that there is typing indicator
-        EnsureComp<TypingIndicatorComponent>(ev.Entity);
-        // we also need appearance component to sync visual state
-        EnsureComp<AppearanceComponent>(ev.Entity);
-    }
-
-    private void OnPlayerDetached(EntityUid uid, TypingIndicatorComponent component, PlayerDetachedEvent args)
-    {
-        // player left entity body - hide typing indicator
-        SetTypingIndicatorEnabled(uid, false);
-    }
-
-    private void OnClientTypingChanged(TypingChangedEvent ev, EntitySessionEventArgs args)
-    {
-        var uid = args.SenderSession.AttachedEntity;
-        if (!Exists(uid))
-        {
-            Log.Warning($"Client {args.SenderSession} sent TypingChangedEvent without an attached entity.");
-            return;
-        }
-
-        // check if this entity can speak or emote
-        if (!_actionBlocker.CanEmote(uid.Value) && !_actionBlocker.CanSpeak(uid.Value))
-        {
-            // nah, make sure that typing indicator is disabled
-            SetTypingIndicatorEnabled(uid.Value, false);
-            return;
-        }
-
-        SetTypingIndicatorEnabled(uid.Value, ev.IsTyping);
-    }
-
-    private void SetTypingIndicatorEnabled(EntityUid uid, bool isEnabled, AppearanceComponent? appearance = null)
-    {
-        if (!Resolve(uid, ref appearance, false))
-            return;
-
-        _appearance.SetData(uid, TypingIndicatorVisuals.IsTyping, isEnabled, appearance);
-    }
 }