* Enable theme context mocking in tests * Expose mockThemeContext from grafana/ui * Add docs * Update contribute/style-guides/themes.md Co-Authored-By: Marcus Olsson <olsson.e.marcus@gmail.com> * Update packages/grafana-ui/src/themes/ThemeContext.tsx Co-Authored-By: Marcus Olsson <olsson.e.marcus@gmail.com> * Update contribute/style-guides/themes.md Co-Authored-By: Marcus Olsson <olsson.e.marcus@gmail.com> * Docs update * Update contribute/style-guides/themes.md Co-Authored-By: Marcus Olsson <olsson.e.marcus@gmail.com>
