refactor(frontend): asとanyをすぐなおせる範囲で除去 (#14848)

* refactor(frontend): できるだけanyを除去

* refactor

* lint

* fix

* remove unused

* Update packages/frontend/src/components/MkReactionsViewer.details.vue

* Update packages/frontend/src/components/MkUsersTooltip.vue

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Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/frontend/src/pages/user/home.vue

@@ -257,7 +257,7 @@ function parallaxLoop() {
 }
 
 function parallax() {
-	const banner = bannerEl.value as any;
+	const banner = bannerEl.value;
 	if (banner == null) return;
 
 	const top = getScrollPosition(rootEl.value);