Link to reagent ingredients on the same Guidebook page (#36700)

* Add in-page links for guidebook reagent recipes

* Add links to microwave recipes

* This function is too specific to be in Control extensions

* Better naming

* Wrap RichTextLabel instead of subclassing

* "Activate" is ambiguous

Content.Client/Guidebook/Controls/GuideReagentEmbed.xaml.cs

@@ -22,13 +22,15 @@ namespace Content.Client.Guidebook.Controls;
 ///     Control for embedding a reagent into a guidebook.
 /// </summary>
 [UsedImplicitly, GenerateTypedNameReferences]
-public sealed partial class GuideReagentEmbed : BoxContainer, IDocumentTag, ISearchableControl
+public sealed partial class GuideReagentEmbed : BoxContainer, IDocumentTag, ISearchableControl, IPrototypeRepresentationControl
 {
     [Dependency] private readonly IEntitySystemManager _systemManager = default!;
     [Dependency] private readonly IPrototypeManager _prototype = default!;
 
     private readonly ChemistryGuideDataSystem _chemistryGuideData;
 
+    public IPrototype? RepresentedPrototype { get; private set; }
+
     public GuideReagentEmbed()
     {
         RobustXamlLoader.Load(this);
@@ -80,6 +82,8 @@ public sealed partial class GuideReagentEmbed : BoxContainer, IDocumentTag, ISea
 
     private void GenerateControl(ReagentPrototype reagent)
     {
+        RepresentedPrototype = reagent;
+
         NameBackground.PanelOverride = new StyleBoxFlat
         {
             BackgroundColor = reagent.SubstanceColor