Fix crash after removing last category while it's active in library (#1450)

(cherry picked from commit 9df21583dc1da6da4041709a6d059848c6c9bda0)

# Conflicts:
#	app/src/main/java/eu/kanade/presentation/library/components/LibraryTabs.kt

app/src/main/java/eu/kanade/presentation/library/components/LibraryTabs.kt

@@ -21,9 +21,7 @@ internal fun LibraryTabs(
     getNumberOfMangaForCategory: (Category) -> Int?,
     onTabItemClick: (Int) -> Unit,
 ) {
-    // SY -->
     val currentPageIndex = pagerState.currentPage.coerceAtMost(categories.lastIndex)
-    // SY <--
     Column(
         modifier = Modifier.zIndex(1f),
     ) {