fix: Fix error handler token injection (#2598)

* fix: Fix error handler token injection

* Add frontend

frontend/src/lib/components/ErrorOrRecoveryHandler.svelte

@@ -218,7 +218,8 @@
 	<span class="w-full flex mb-3">
 		<Toggle
 			disabled={!$enterpriseLicense || !isEditable}
-			checked={handlerPath === slackHandlerScriptPath}
+			checked={handlerPath?.startsWith('hub/') &&
+				handlerPath?.endsWith('/workspace-or-schedule-error-handler-slack')}
 			options={{ right: slackToggleText }}
 			on:change={async (e) => {
 				handlerPath = e.detail ? slackHandlerScriptPath : undefined
@@ -238,7 +239,7 @@
 			class="text-xs"
 		/>
 	{/if}
-	{#if handlerPath === slackHandlerScriptPath && enterpriseLicense}
+	{#if enterpriseLicense && handlerPath?.startsWith('hub/') && handlerPath?.endsWith('/workspace-or-schedule-error-handler-slack')}
 		{#if !workspaceConnectedToSlack}
 			<Alert type="error" title="Workspace not connected to Slack">
 				<div class="flex flex-row gap-x-1 w-full items-center">