Merge pull request #33082 from backstage/bui-migrate-catalog-entity-cards

feat(catalog,org): migrate entity cards from MUI/InfoCard to BUI

.changeset/social-worlds-report.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-catalog-react': minor
+---
+
+Added `EntityInfoCard` component to `@backstage/plugin-catalog-react` as a BUI-based card wrapper for entity page cards.

.changeset/thirty-kiwis-trade.md

@@ -0,0 +1,22 @@
+---
+'@backstage/plugin-catalog': major
+'@backstage/plugin-org': minor
+---
+
+Migrated `EntityAboutCard`, `EntityLinksCard`, `EntityLabelsCard`, `GroupProfileCard`, and `UserProfileCard` from MUI/InfoCard to use the new BUI card layout and BUI components where possible.
+
+**BREAKING**: Removed `variant` prop from EntityAboutCard, EntityUserProfileCard, EntityGroupProfileCard, EntityLabelsCard, EntityLinksCard. Removed `gridSizes` prop from `AboutField`.
+
+**Migration:**
+
+Simply delete the obsolete `variant` and `gridSizes` props, e.g:
+
+```diff
+-      <EntityAboutCard variant="gridItem" />
++      <EntityAboutCard />
+```
+
+```diff
+-      <AboutField label="Owner" gridSizes={{ xs: 12, sm: 6, lg: 4 }} />
++      <AboutField label="Owner" />
+```