[ExHentai] Fix tags parsing

build.gradle

@@ -58,7 +58,7 @@ dependencies {
 	implementation 'com.squareup.okio:okio:3.9.0'
 	api 'org.jsoup:jsoup:1.18.1'
 	implementation 'org.json:json:20240303'
-	implementation 'androidx.collection:collection:1.4.1'
+	implementation 'androidx.collection:collection:1.4.2'
 
 	ksp project(':kotatsu-parsers-ksp')
 

src/main/kotlin/org/koitharu/kotatsu/parsers/site/all/ExHentaiParser.kt

@@ -279,8 +279,8 @@ internal class ExHentaiParser(
 
 		val doc = webClient.httpGet("https://${domain}").parseHtml()
 		val root = doc.body().requireElementById("searchbox").selectFirstOrThrow("table")
-		root.select("div.cs").mapNotNullToSet { div ->
-			val id = div.id().substringAfterLast('_').toIntOrNull() ?: return@mapNotNullToSet null
+		root.select("div.cs").forEach { div ->
+			val id = div.id().substringAfterLast('_').toIntOrNull() ?: return@forEach
 			val name = div.text().toTitleCase(Locale.ENGLISH)
 			tagMap[name] = MangaTag(
 				title = "Kind: $name",