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/[event_id]/(leads)/leads/ae_comp__exhibit_search.svelte

@@ -32,9 +32,9 @@
         $events_loc.leads.search_version++;
     }
 
-    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);
         };
     }
@@ -42,7 +42,7 @@
 
 <div class="ae_group filters_and_search flex flex-col items-center justify-center gap-2 w-full">
     <form
-        onsubmit={preventDefault(() => {
+        onsubmit={prevent_default(() => {
             handle_search_trigger();
         })}
         autocomplete="off"

src/routes/events/[event_id]/(leads)/leads/exhibit/[exhibit_id]/ae_comp__exhibit_tracking_search.svelte

@@ -32,9 +32,9 @@
         $events_loc.leads.tracking__search_version++;
     }
 
-    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);
         };
     }
@@ -42,7 +42,7 @@
 
 <div class="ae_group filters_and_search flex flex-col items-center justify-center gap-2 w-full">
     <form
-        onsubmit={preventDefault(() => {
+        onsubmit={prevent_default(() => {
             handle_search_trigger();
         })}
         autocomplete="off"