Ensure icon always falls back to macro icon, never question mark

Updated fallback logic to always use the macro's chosen icon (from the
macro frame) when no action is active. The priority is now:
1. Tooltip texture (from first action if #showtooltip is present)
2. Macro's icon (from macro frame)
3. Never question mark (unless GetMacroInfo fails, which shouldn't happen)

This ensures the icon properly shows the macro's icon when all
conditionals fail, instead of showing a question mark.

Core.lua

@@ -2420,25 +2420,28 @@ function GetActionTexture(slot)
     if actions and (actions.active or actions.tooltip) then
 
         -- This block handles the case where all conditionals fail and no explicit
-        -- #showtooltip was set. It defaults to the macro's chosen icon (e.g., the red '?')
+        -- #showtooltip was set. It defaults to the macro's chosen icon.
         if not actions.active and not actions.explicitTooltip and actions.list and table.getn(actions.list) > 0 then
-            -- First try to use the tooltip texture if it exists
-            if actions.tooltip and actions.tooltip.texture then
-                return actions.tooltip.texture
-            end
-
-            -- Then try to get the macro's own icon
+            -- Get the macro's own icon as fallback
+            local macroTexture = nil
             local macroName = GetActionText(slot)
             if macroName then
                 local macroID = GetMacroIndexByName(macroName)
                 if macroID and macroID > 0 then
-                    local _, macroTexture = GetMacroInfo(macroID)
-                    if macroTexture then
-                        return macroTexture
-                    end
+                    local _, texture = GetMacroInfo(macroID)
+                    macroTexture = texture
                 end
             end
-            return CleveRoids.unknownTexture
+
+            -- Prefer tooltip texture if it exists, otherwise use macro icon
+            if actions.tooltip and actions.tooltip.texture then
+                return actions.tooltip.texture
+            elseif macroTexture then
+                return macroTexture
+            end
+
+            -- Should never reach here, but return macro texture or unknown as last resort
+            return macroTexture or CleveRoids.unknownTexture
         end
 
         -- Prioritize active action, fall back to tooltip