Added Popup for the Ligneous plant mutation when using hands. (#33136)

* Added Popup for the Ligneous plant mutation when using hands.

There was some confusion for players with the Ligneous mutation which makes the plant harvestable only with sharp tools. Adding a popup with the message "The plant is too tough." to give them a hint to use something other than just their hands.

I decided to only put the message when attempting to harvest using hands, as the intent is clear that the player just wanted to harvest, but wasn't able to. Using any other tools like a crowbar or a screwdriver will not trigger the popup.

* Update Resources/Locale/en-US/botany/components/plant-holder-component.ftl

Co-authored-by: SlamBamActionman <83650252+SlamBamActionman@users.noreply.github.com>

---------

Co-authored-by: SlamBamActionman <83650252+SlamBamActionman@users.noreply.github.com>

Content.Server/Botany/Systems/PlantHolderSystem.cs

@@ -680,7 +680,10 @@ public sealed class PlantHolderSystem : EntitySystem
             if (TryComp<HandsComponent>(user, out var hands))
             {
                 if (!_botany.CanHarvest(component.Seed, hands.ActiveHandEntity))
+                {
+                    _popup.PopupCursor(Loc.GetString("plant-holder-component-ligneous-cant-harvest-message"), user);
                     return false;
+                }
             }
             else if (!_botany.CanHarvest(component.Seed))
             {