refactor: remove redundant searchId tracking

AbortController already handles cancellation of stale requests,
making the searchId/currentSearchId pattern unnecessary.

src/routes/spaces/[relay]/recent/+page.svelte

@@ -114,7 +114,6 @@
   let loading = $state(false)
   let searchResults: TrustedEvent[] = $state([])
   let searchInput: HTMLInputElement | undefined = $state()
-  let currentSearchId = 0
   let controller: AbortController | undefined
 
   let limit = $state(20)
@@ -157,7 +156,7 @@
     controller = undefined
   }
 
-  const search = debounce(300, async (searchTerm: string, searchId: number) => {
+  const search = debounce(300, async (searchTerm: string) => {
     controller?.abort()
 
     if (!searchTerm.trim()) {
@@ -177,27 +176,19 @@
         filters: [{kinds: [MESSAGE, ...CONTENT_KINDS], search: searchTerm.trim()}],
       })
 
-      if (searchId === currentSearchId) {
-        searchResults = sortEventsDesc(uniqBy((e: TrustedEvent) => e.id, events))
-      }
+      searchResults = sortEventsDesc(uniqBy((e: TrustedEvent) => e.id, events))
     } catch (error) {
-      if (
-        !(error instanceof DOMException && error.name === "AbortError") &&
-        searchId === currentSearchId
-      ) {
+      if (!(error instanceof DOMException && error.name === "AbortError")) {
         searchResults = []
       }
     } finally {
-      if (searchId === currentSearchId) {
-        loading = false
-      }
+      loading = false
     }
   })
 
   const onInput = () => {
     showSearch = true
-    currentSearchId += 1
-    void search(term, currentSearchId)
+    void search(term)
   }
 
   const onResultClick = (event: TrustedEvent) => {