Remove core workflow improvements flag

[novoselrok]

Fixes #41002

Test plan

• No new functionality added, everything should be covered by tests

App preview:

• Web
• Storybook

Check out the client app preview documentation to learn more.

[sourcegraph-bot]

Codenotify: Notifying subscribers in CODENOTIFY files for diff cfedd9860ea59cd2e5194116a952a1e5775091e7...7780f65b46889d3d935b99b2efda6f8cc2936964.

Notify	File(s)
@fkling	client/search-ui/src/components/CommitSearchResult.tsx client/search-ui/src/components/FileMatchChildren.module.scss client/search-ui/src/components/FileMatchChildren.tsx client/search-ui/src/components/FileSearchResult.tsx client/search-ui/src/components/RepoSearchResult.tsx client/search-ui/src/components/ResultContainer.module.scss client/search-ui/src/components/ResultContainer.tsx client/search-ui/src/components/SearchResult.module.scss client/search-ui/src/results/progress/StreamingProgress.tsx client/search-ui/src/results/progress/StreamingProgressSkippedButton.tsx client/search-ui/src/results/progress/StreamingProgressSkippedPopover.tsx client/search-ui/src/results/sidebar/FilterLink.test.tsx client/search-ui/src/results/sidebar/FilterLink.tsx client/search-ui/src/results/sidebar/SearchFilterSection.module.scss client/search-ui/src/results/sidebar/SearchFilterSection.tsx client/search-ui/src/results/sidebar/SearchSidebar.module.scss client/search-ui/src/results/sidebar/snapshots/FilterLink.test.tsx.snap client/web/src/search/SearchConsolePage.tsx client/web/src/search/home/SearchPage.module.scss client/web/src/search/home/SearchPage.tsx client/web/src/search/home/SearchPageInput.tsx client/web/src/search/input/SearchNavbarItem.tsx client/web/src/search/results/ButtonDropdownCta.module.scss client/web/src/search/results/ButtonDropdownCta.tsx client/web/src/search/results/SearchResultsInfoBar.tsx client/web/src/search/results/StreamingSearchResults.module.scss client/web/src/search/results/components/aggregation/SearchAggregationResult.module.scss client/web/src/search/results/components/aggregation/components/aggregation-chart-card/components/AggregationLayouts.module.scss client/web/src/search/results/sidebar/Revisions.tsx client/web/src/search/results/sidebar/SearchFiltersSidebar.tsx
@limitedmage	client/search-ui/src/components/CommitSearchResult.tsx client/search-ui/src/components/FileMatchChildren.module.scss client/search-ui/src/components/FileMatchChildren.tsx client/search-ui/src/components/FileSearchResult.tsx client/search-ui/src/components/RepoSearchResult.tsx client/search-ui/src/components/ResultContainer.module.scss client/search-ui/src/components/ResultContainer.tsx client/search-ui/src/components/SearchResult.module.scss client/search-ui/src/results/progress/StreamingProgress.tsx client/search-ui/src/results/progress/StreamingProgressSkippedButton.tsx client/search-ui/src/results/progress/StreamingProgressSkippedPopover.tsx client/search-ui/src/results/sidebar/FilterLink.test.tsx client/search-ui/src/results/sidebar/FilterLink.tsx client/search-ui/src/results/sidebar/SearchFilterSection.module.scss client/search-ui/src/results/sidebar/SearchFilterSection.tsx client/search-ui/src/results/sidebar/SearchSidebar.module.scss client/search-ui/src/results/sidebar/snapshots/FilterLink.test.tsx.snap client/web/src/enterprise/code-monitoring/components/FormTriggerArea.tsx client/web/src/search/SearchConsolePage.tsx client/web/src/search/home/SearchPage.module.scss client/web/src/search/home/SearchPage.tsx client/web/src/search/home/SearchPageInput.tsx client/web/src/search/input/SearchNavbarItem.tsx client/web/src/search/results/ButtonDropdownCta.module.scss client/web/src/search/results/ButtonDropdownCta.tsx client/web/src/search/results/SearchResultsInfoBar.tsx client/web/src/search/results/StreamingSearchResults.module.scss client/web/src/search/results/components/aggregation/SearchAggregationResult.module.scss client/web/src/search/results/components/aggregation/components/aggregation-chart-card/components/AggregationLayouts.module.scss client/web/src/search/results/sidebar/Revisions.tsx client/web/src/search/results/sidebar/SearchFiltersSidebar.tsx