@primer/react@38.45.0

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Minor Changes

• #8034 f80b27c Thanks @copilot-swe-agent! - Blankslate: Add compact-default sizing and default-sized primary actions behind the default-off primer_react_blankslate_compact_default feature flag. The small size remains supported.

• #8534 57c2ac5 Thanks @rickyzhangca! - DataTable: Add bulk actions in the table header with selection counts and focus recovery.

• #8640 8088a06 Thanks @rickyzhangca! - DataTable: Add selection checkboxes to collapsible groups, aligned with row checkboxes. Table.Group supports controlled group selection.

Patch Changes

• #8612 9cd1f8a Thanks @alexus37! - ActionBar, UnderlineNav: Batch descendant registry updates to reduce cascading renders during rapid item changes

• #8634 62d32c9 Thanks @HadrielWonda! - FilteredActionList: Only reference the list from the filter input while the list is rendered, so aria-controls never points at a missing element during body loading or when a message is shown

• #8638 4b1cc1d Thanks @joshblack! - Polymorphic components: Fix TypeScript inference for component-specific props while preserving as support.

• #8611 68a5c0b Thanks @alexus37! - ActionMenu: Avoid an extra render when closed menus mount while preserving accessible trigger labeling

• #8534 57c2ac5 Thanks @rickyzhangca! - Table: Preserve bottom corners when the final row group is empty.