chore(preferences): remove enableQueryHistoryAutocomplete feature flag

[Anemy]

A cleanup as this feature has been released now for some time, so we can remove this feature flag.

[Copilot]

Pull Request Overview

Cleanup removal of the enableQueryHistoryAutocomplete feature flag and simplify the query editor to always use the history-enabled completer.

• Removed the unused preference and import for createQueryAutocompleter
• Simplified the OptionEditor component to always initialize createQueryWithHistoryAutocompleter
• Deleted the flag definition and type from the preferences model

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
packages/compass-query-bar/src/components/option-editor.tsx	Dropped feature-flag checks, always use createQueryWithHistoryAutocompleter
packages/compass-preferences-model/src/feature-flags.ts	Removed enableQueryHistoryAutocomplete from both type and definitions

Comments suppressed due to low confidence (2)

packages/compass-query-bar/src/components/option-editor.tsx:156

• Add or update unit tests for OptionEditor to verify that it always uses createQueryWithHistoryAutocompleter now that the conditional branch is removed.

const completer = useMemo(() => {

packages/compass-preferences-model/src/feature-flags.ts:19

• Ensure any external docs, migration guides, or schema definitions no longer reference enableQueryHistoryAutocomplete to prevent stale documentation.

enableQueryHistoryAutocomplete: boolean;