Fix: make popups dismissable again

src/UI/Base/Popup.svelte

@@ -9,7 +9,7 @@
   export let fullscreen: boolean = false
   export let bodyPadding = "p-4 md:p-5 "
   export let shown: UIEventSource<boolean>
-  export let dismissable = false
+  export let dismissable = true
   /**
    * Default: 50
    */

src/UI/Image/AttributedImage.svelte

@@ -75,7 +75,7 @@
   }
 </script>
 
-<Popup shown={showBigPreview} bodyPadding="p-0" dismissable={false}>
+<Popup shown={showBigPreview} bodyPadding="p-0" dismissable={true}>
   <div slot="close" />
   <div style="height: 80vh">
     <ImageOperations {image}>