Fix sloshing electricity & enable SpeechVerb masking (#24238)

* Implemented electricity speech verb masking

* Handle speech verb override elsewhere in the system, even though we're not using it

* Fix that protoId business

* No nullable component fields

* Use ProtoId, and try going back to a nullable.
Specifiy DataFields on VoiceMaskComponent.

Content.Server/VoiceMask/VoiceMaskComponent.cs

@@ -1,9 +1,23 @@
+using Content.Shared.Speech;
+using Robust.Shared.Prototypes;
+
 namespace Content.Server.VoiceMask;
 
 [RegisterComponent]
 public sealed partial class VoiceMaskComponent : Component
 {
-    [ViewVariables(VVAccess.ReadWrite)] public bool Enabled = true;
+    [DataField]
+    [ViewVariables(VVAccess.ReadWrite)]
+    public bool Enabled = true;
 
-    [ViewVariables(VVAccess.ReadWrite)] public string VoiceName = "Unknown";
+    [DataField]
+    [ViewVariables(VVAccess.ReadWrite)]
+    public string VoiceName = "Unknown";
+
+    /// <summary>
+    /// If EnableSpeechVerbModification is true, overrides the speech verb used when this entity speaks.
+    /// </summary>
+    [DataField]
+    [ViewVariables(VVAccess.ReadWrite)]
+    public ProtoId<SpeechVerbPrototype>? SpeechVerb;
 }