link visibility of passphrase inputs on EnterPassphrase page

src/ui/PassphraseInput.svelte

@@ -4,10 +4,10 @@
     export let value = '';
     export let placeholder = '';
     export let autofocus = false;
+    export let show = false;
     let classes = '';
     export {classes as class};
 
-    let show = false;
     let input;
 
     export function focus() {