UI: Enforce snake case for functions

It's more common to write functions in camelCase in JS, so some people
started doing it, including me. But the majority of the codebase is
snake_case, so let's enforce that.

daemon/web/src/lib/components/DeleteButton.svelte

@@ -12,7 +12,7 @@
         name: string;
     } = $props();
 
-    function confirmDelete() {
+    function confirm_delete() {
         if (window.confirm(prompt)) {
             user_action_req('POST', url, 'Unable to delete recording ' + name);
         }
@@ -21,7 +21,7 @@
 
 <button
     class="bg-red-500 hover:bg-red-700 text-white font-bold py-2 px-2 sm:px-4 rounded-md flex flex-row"
-    onclick={confirmDelete}
+    onclick={confirm_delete}
     aria-label="delete"
 >
     <p>{text}</p>