Allow multiple prevent default for Web, Desktop and LiveView (#987)

* Allow multiple prevent default in dioxus_web

* Use SplitWhitespace for prevent default requests

* Add multiple prevent default option to liveview and desktop

* Update docs about prevent_default attribute

* cargo clippy

* update prevent default guide example

---------

Co-authored-by: Evan Almloff <ealmlof1@stumail.jccc.edu>

docs/guide/src/en/interactivity/event_handlers.md

@@ -41,7 +41,7 @@ If you want to prevent this behavior, you can call `stop_propagation()` on the e
 
 Some events have a default behavior. For keyboard events, this might be entering the typed character. For mouse events, this might be selecting some text.
 
-In some instances, might want to avoid this default behavior. For this, you can add the `prevent_default` attribute with the name of the handler whose default behavior you want to stop. This attribute is special: you can attach it multiple times for multiple attributes:
+In some instances, might want to avoid this default behavior. For this, you can add the `prevent_default` attribute with the name of the handler whose default behavior you want to stop. This attribute can be used for multiple handlers using their name separated by spaces:
 
 ```rust
 {{#include ../../../examples/event_prevent_default.rs:prevent_default}}