feat: execute toggle_entry if translate'string' window is available

lua/Trans/frontend/hover/init.lua

@@ -189,7 +189,10 @@ end
 ---@param data TransData
 ---@overload fun(result:TransResult)
 function M:process(data)
-    if self.pin then return end
+    if self.window and self.window:is_valid() then
+        self:execute 'toggle_entry'
+        return
+    end
 
     local result, name = data:get_available_result()
     if not result then