Fix mobile formatting issue

src/app.scss

@@ -638,3 +638,7 @@ aside.menu.main-menu .menu-expanse {
 .modal .modal-content.nomax {
   max-height: none;
 }
+
+.modal.chat-settings .field-body {
+  max-width: calc(100% - 40px);
+}

src/lib/ChatSettingsModal.svelte

@@ -253,7 +253,7 @@
 </script>
 
 <!-- svelte-ignore a11y-click-events-have-key-events -->
-<div class="modal" class:is-active={showSettingsModal}>
+<div class="modal chat-settings" class:is-active={showSettingsModal}>
   <div class="modal-background" on:click={closeSettings} />
   <div class="modal-card wide" on:click={() => { showProfileMenu = false }}>
     <header class="modal-card-head">