text: Title: When you visit a URL using URL params and click Share, it appends URL parameters
  Body: When you click on the "Share" button and get the URL from a page with URLs, it appends the parameters (rather than overwriting them) and screws up the page.
  
  ![screencap3](https://github.com/mljar/mercury/assets/1063618/695941ff-08d8-43a0-93be-78c544e286a4)
  
  Code to repro:
  ```
  import mercury as mr
   
  first_name = mr.Text(value="John", label="First Name", rows=1, url_key="first_name")
  last_name = mr.Text(value="Appleseed", label="Last Name", rows=1, url_key="last_name")
  animal = mr.Text(value="", label="Your favourite animal", url_key="animal")
  ```
  