feat: Search shared documents (#3126)

* provide a type-ahead search input on shared document pages that allow search of child document tree
* improve keyboard navigation handling of all search views
* improve coloring on dark mode list selection states
* refactor PaginatedList component to eliminate edge cases

app/components/PlaceholderText.tsx

@@ -4,7 +4,7 @@ import { randomInteger } from "@shared/random";
 import Flex from "~/components/Flex";
 import { pulsate } from "~/styles/animations";
 
-type Props = {
+export type Props = {
   header?: boolean;
   height?: number;
   minWidth?: number;