fix: #3630358 Views tabs sharing a pager element all render the last-executed tab's pager

Build the tab's renderable from a fresh view instead of the one already executed for the emptiness check, so each tab's view runs at render time and creates its own pager before that pager is themed.

Co-Authored-By: Claude Opus 5.5 noreply@anthropic.com

Closes #3630358