- Update SearchBox.mustache markup to use codex styles
- Scope old SearchBox markup to LegacySearchBox.mustache
- Add handling for thumbnail and autoexpand search variants
- Adds a 'Search' button to SearchBox.mustache matching the initial non vue search box with the Codex design
- Refactor SearchBox CSS so styles are scoped better
Visual changes:
A "Search" button now appears on page load when it previously only appeared after loading in Vue
Bug: T337966
Change-Id: Ibcffe00292ab4f9f5f9919982d578793cf8594de
