COMDOX-1016: Backward-incompatible changes for 2.4.8-beta1

[jeff-matthews]

Purpose of this pull request

This pull request (PR) adds 2.4.8-beta1 nackward-incompatible change highlights as described in COMDOX-1016.

Affected pages (staging)

• https://adobedocs.github.io/commerce-php/development/backward-incompatible-changes/highlights/#248-beta

[jeff-matthews]

Validation failure is due to broken links in the Module Reference Guide:

src/pages/module-reference/module-media-gallery-ui-api.md
18:1-18:1[4](https://github.com/AdobeDocs/commerce-php/actions/runs/11016624290/job/30592693113?pr=316#step:4:5)1 warning Link to https://experienceleague.adobe.com/docs/commerce-admin/content-design/media/gallery/media-gallery.html is dead          no-dead-urls remark-lint

src/pages/module-reference/module-media-gallery-ui.md
[5](https://github.com/AdobeDocs/commerce-php/actions/runs/11016624290/job/30592693113?pr=316#step:4:6)2:1-52:141 warning Link to https://experienceleague.adobe.com/docs/commerce-admin/content-design/media/gallery/media-gallery.html is dead          no-dead-urls remark-lint

src/pages/module-reference/module-media-gallery.md
30:1-30:141 warning Link to https://experienceleague.adobe.com/docs/commerce-admin/content-design/media/gallery/media-gallery.html is dead          no-dead-urls remark-lint

src/pages/module-reference/module-media-storage.md
45:3-45:1[6](https://github.com/AdobeDocs/commerce-php/actions/runs/11016624290/job/30592693113?pr=316#step:4:7)3 warning Link to https://experienceleague.adobe.com/docs/commerce-admin/content-design/media/storage/media-storage-database.html is dead no-dead-urls remark-lint

⚠ 4 warnings
Error: Process completed with exit code 1.