refactor: standardize 'prevent_default' helpers and batch format modules

- Renamed internal 'preventDefault' helpers to 'prevent_default' for project-wide snake_case consistency.
- Corrected native event method calls from 'prevent_default()' to 'preventDefault()' to resolve runtime TypeErrors.
- Applied batch formatting (printWidth: 80) to Journals and IDAA Recovery Meetings modules.
- Removed deprecated 'preventDefault' imports from svelte/legacy.
- Fixed Journal Entry 404 by migrating loader to V3 API helper.

src/routes/events/ae_comp__event_files_upload.svelte

@@ -71,9 +71,9 @@
     let input_element_id = 'ae_comp__event_files_upload__input';
 
     // *** Functions and Logic
-    function preventDefault<T extends Event>(fn: (event: T) => void) {
+    function prevent_default<T extends Event>(fn: (event: T) => void) {
         return function (event: T) {
-            event.preventDefault();
+            event.prevent_default();
             fn(event);
         };
     }
@@ -251,7 +251,7 @@
 </script>
 
 <!-- class:hidden={!$ae_loc.trusted_access} -->
-<form onsubmit={preventDefault(handle_submit_form_files)} class="{class_li_default} {class_li}">
+<form onsubmit={prevent_default(handle_submit_form_files)} class="{class_li_default} {class_li}">
     {#await ae_promises.upload__hosted_file_obj}
         <div class="text-lg flex flex-row gap-1 items-center justify-center">
             <span class="fas fa-spinner fa-spin m-1"></span>