Fix: abort previous filter request on new keystroke (#1263)

The autosubmit filter had two issues:

1. The debounce() utility used a blockedByPromise mechanism that
   silently discarded keystrokes while a request was in flight.
   When the server was slow, the user could type "abc" but only
   get results for "a" because "b" and "c" were dropped.
   Removed blockedByPromise so debounce always resets the timer.

2. When typing slowly (>200ms between keystrokes), each keystroke
   triggered a separate AJAX request, but previous requests were
   never aborted. Added data-naja-unique attribute to the filter
   form so Naja's built-in UniqueExtension automatically aborts
   the previous request when a new one starts.

Author: dg

assets/utils.ts

@@ -121,21 +121,11 @@ export function debounce<TArgs, TFun extends (...args: TArgs[]) => unknown | Pro
 	slowdown: number = 200
 ): (...args: TArgs[]) => void {
 	let timeout: ReturnType<typeof setTimeout> | null = null;
-	let blockedByPromise: boolean = false;
 
 	return (...args) => {
-		if (blockedByPromise) return;
-
 		timeout && clearTimeout(timeout);
 		timeout = setTimeout(() => {
-			const result = fn(...args);
-
-			if (isPromise(result)) {
-				blockedByPromise = true;
-				result.finally(() => {
-					blockedByPromise = false;
-				});
-			}
+			fn(...args);
 		}, slowdown);
 	};
 }

src/templates/datagrid.latte

@@ -17,7 +17,7 @@
 <div class="{block datagrid-class}datagrid{/block}" data-datagrid-name="{$control->getFullName()}" data-refresh-state="{link refreshState!}">
 	<div n:snippet="grid">
 	{snippetArea gridSnippets}
-		{form filter, class => 'ajax'}
+		{form filter, class => 'ajax', data-naja-unique => "datagrid-filter-{$control->getFullName()}"}
 			{if $control->hasOuterFilterRendering()}
 				{block outer-filters}
 					<div class="row text-end datagrid-collapse-filters-button-row" n:if="$control->hasCollapsibleOuterFilters()">