* Rename kibana_breadcrumbs to kibana_chrome
- in anticipation of upcoming refactor where SetPageChrome now handles document title as well as Kibana breadcrumbs
+ cleanup exports
* Add generate_title helpers
- will be used by new set_chrome helper
* Add setDocTitle context + behavior to set_chrome
+ refactor set_chrome.test.tsx:
- add title tests
- add SetWorkplaceSearchChrome test to increase coverage
- clean up inner/outer call in favor of simpler mocks/imports
- simplify isRoot tests
* Update plugins to set product titles
- on mount but before render
* Copy feedback - change pipe separator to hyphen
- to match ' - Elastic'
* Add functional tests confirming that document titles updated
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