fix(webapp): animated resizable panel pattern for route components

Squashed rebase of pr-3319-fix onto official/main.

Co-authored-by: James Ritchie <james@trigger.dev>

Author: deepshekhardas

.changeset/animated-resizable-panel.md

@@ -0,0 +1,8 @@
+---
+"@trigger.dev/core": patch
+"@trigger.dev/sdk": patch
+---
+
+Feat(webapp): animated resizable panel
+
+Adds animated open/close transitions to Resizable panels using react-window-splitter built-in animation hooks. Includes new exports: RESIZABLE_PANEL_ANIMATION, collapsibleHandleClassName(), and useFrozenValue(). Converts inspector/detail side panels from conditionally-mounted to always-mounted collapsible panels across multiple routes (batches, runs, schedules, deployments, logs, waitpoints, bulk-actions).

apps/webapp/app/routes/_app.orgs.$organizationSlug.projects.$projectParam.env.$envParam.logs/route.tsx

@@ -412,7 +412,7 @@ function LogsList({
   const frozenLogId = useFrozenValue(selectedLogId);
   const frozenLog = useFrozenValue(selectedLog);
   const displayLogId = selectedLogId ?? frozenLogId;
-  const displayLog = selectedLog ?? frozenLog ?? undefined;
+  const displayLog = selectedLog ?? frozenLog;
 
   const updateUrlWithLog = useCallback((logId: string | undefined) => {
     const url = new URL(window.location.href);