Prevent default on Enter and add type=button to clear button element

src/Internal/View/ElmCss.elm

@@ -251,6 +251,7 @@ clearButtonElement onChange attribs element =
             , Css.batch attribs
             ]
         , Attributes.tabindex -1
+        , Attributes.type_ "button"
         , Events.onClick (onChange ClearButtonPressed)
         ]
         [ element ]

src/Internal/View/Events.elm

@@ -29,7 +29,7 @@ hijackKey :
 hijackKey menuOpen tagger key =
     { message = tagger key
     , stopPropagation = menuOpen && key == "Escape"
-    , preventDefault = List.member key [ "ArrowUp", "ArrowDown", "PageUp", "PageDown" ]
+    , preventDefault = List.member key [ "ArrowUp", "ArrowDown", "PageUp", "PageDown", "Enter" ]
     }