Content Guidelines: Revision history UX improvements and pagination #76386

What problem does this address?

Several UX improvements and a pagination fix for the revision history screen were identified during review of #76155.

Tracking Issue: #76384

What is your proposed solution?

1. Use in-built DataViews pagination

Replace the hardcoded perPage: 100 with proper server-side pagination using DataViews' built-in paginationInfo prop and onChangeView callback.

Ref: #76155 (comment)

2. Persist revision history navigation on page refresh

Refreshing the browser navigates back to the main page instead of staying on the revision screen.

Ref: #76155 (comment)

3. Remove column reorder options from DataView

The "Move left"/"Move right" options aren't useful and lead to awkward layouts.

Ref: #76155 (comment)

4. Fix date column alignment regression

The date header column is misaligned with column content.

Ref: #76155 (comment)

5. Reduce CSS overrides on DataViews internal classes

Several internal DataViews classes (.dataviews__view-actions, .dataviews-filters__container, .dataviews-view-table, .components-button) are overridden, creating fragility. Explore alternatives.

Ref: #76155 (comment), #76155 (comment)

6. (Optional) Add revision description/preview column

The revision table only shows date and author. Add a description of what changed (e.g., "Updated Site guidelines", "Added paragraph block guidelines") as the first column.

Ref: #76155 (comment)