Fix Flavor Text editor not saving correctly (#28122)

* Check for flavor text equality in profile.

* Fix some characters being deleted from flavor text

Sometimes the last few characters of the flavor text would get deleted. This fixes this issue.

(cherry picked from commit 9f1d95e3353493f28d579b562de348a322312885)

Content.Client/FlavorText/FlavorText.xaml.cs

@@ -17,7 +17,7 @@ public FlavorText()
 
             var loc = IoCManager.Resolve<ILocalizationManager>();
             CFlavorTextInput.Placeholder = new Rope.Leaf(loc.GetString("flavor-text-placeholder"));
-            CFlavorTextInput.OnKeyBindDown  += _ => FlavorTextChanged();
+            CFlavorTextInput.OnTextChanged  += _ => FlavorTextChanged();
         }
 
         public void FlavorTextChanged()

Content.Shared/Preferences/HumanoidCharacterProfile.cs

@@ -336,7 +336,8 @@ public bool MemberwiseEquals(ICharacterProfile maybeOther)
             && _antagPreferences.SequenceEqual(other._antagPreferences)
             && _traitPreferences.SequenceEqual(other._traitPreferences)
             && LoadoutPreferences.SequenceEqual(other.LoadoutPreferences)
-            && Appearance.MemberwiseEquals(other.Appearance);
+            && Appearance.MemberwiseEquals(other.Appearance)
+            && FlavorText == other.FlavorText;
     }
 
     public void EnsureValid(ICommonSession session, IDependencyCollection collection)