Add mention of 'Select all' action in Media Library bulk operations

[pwizla]

This PR updates documentation based on strapi/strapi#27453.

Users can now select all rendered items at once in the Media Library bulk actions bar. This enhancement improves workflow efficiency when managing multiple assets.

Generated automatically by the docs self-healing workflow (micro-edit, Haiku).
Review before merging.

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Project	Deployment	Actions	Updated
documentation	Ready	Preview	Sep 2, 2026 1:54am UTC

[pwizla]

Closing this one without merging.

The change it documents, strapi/strapi#27453, only touches packages/core/upload/admin/src/future/**, so the Select all button exists only in the beta Media Library behind the future.betaMediaLibrary flag. This edit landed in the tip under #### Deleting assets, which describes the stable UI, and the page states that itself further up: "The current page still describes the stable version of the Media Library".

Placed there, the sentence is wrong on four counts. The stable UI has no bulk actions bar: pages/App/components/BulkActions.tsx renders a plain flex row holding a count, a delete button and a move button. It has no Select all button either, only a checkbox whose "Select all assets" string (bulk.select.label) is an aria-label and never visible text. "Rendered items" comes from future/pages/Assets/utils/renderedKeys.ts, a file that 27453 creates. And "items" is beta vocabulary, while this section says assets and folders. The tip also ends up contradicting itself, asking the reader to click Select all in the bulk actions bar, then Delete at the top of the window below the filters and sorting options.

The content now lives in #3433, which documents the beta UI, in commit 5737cf9. That commit also fixed the sentence 27453 made false over there, which claimed that only the table view offers a select-all and that the grid view has no equivalent.

Worth noting for the self-healing pipeline: a future/ path prefix in the source PR is a reliable signal that the change is flag-gated and must not be written into the stable page.