chore(deps): update @primer/react to v38.19.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@primer/react	38.18.0 → 38.19.0

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Release Notes

primer/react (@​primer/react)

v38.19.0

Compare Source

Minor Changes

• #​7677 c1a81b1 Thanks @​TylerJDev! - AnchoredOverlay: Add Popover API to AnchoredOverlay (behind primer_react_css_anchor_positioning feature flag)

• #​7697 990ce7b Thanks @​hectahertz! - Stack: Add tight (4px) and cozy (12px) spacing values to gap and padding props. Add paddingBlock and paddingInline props for directional padding control.

Patch Changes

• #​7652 5d19e2b Thanks @​owenniblock! - useAnchoredPosition: recalculate overlay position when any scrollable ancestor (or the window) is scrolled.

• #​7707 6431bfe Thanks @​liuliu-dev! - Fix anchor-name not being set on the anchor element when SelectPanel is opened in Copilot code agent.

• #​7633 a107d39 Thanks @​copilot-swe-agent! - Graduate primer_react_css_has_selector_perf feature flag: the CSS :has() performance optimization (body[data-dialog-scroll-disabled]) is now the default behavior for Dialog scroll disabling

• #​7695 780fc3d Thanks @​mattcosta7! - perf(ThemeProvider): Reduce unnecessary renders and effect cascades

  • Replace useState + useEffect SSR hydration handoff with useSyncExternalStore — eliminates post-hydration re-render
  • Replace useState + useEffect in useSystemColorMode with useSyncExternalStore — eliminates effect gap and stale-then-update flicker
  • Cache getServerHandoff DOM read + JSON.parse per ID (runs once, not on every call)
  • Memoize context value object to prevent unnecessary re-renders of all consumers

• #​7706 fd8910a Thanks @​liuliu-dev! - ActionList.Item: fix inline descriptions being referenced via aria-labelledby instead of aria-describedby

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud