issue #834 fix when pagination doesn't work when more than one table …

[AnnMarieW]

This PR fixes two pagination issues:

1. Where pagination buttons are not visible or do not work because another table or figure overlaps the pagination container.

   • Closes: https://github.com/plotly/dash-docs/pull/1150
   • Fixes Pagination doesn't work when more than one table is on the page #834
   • Fixes pagination UI doesn't have 100% width #739
   • Fixes I have an issue related to pagination in dash #727

2. If you are on a page that no longer exists after data is updated, then no data shows in the table. This is fixed by resetting the page_current to 0

   • Fixes Page selection disappears when number of pages decreases to one #892
   • Fixes go back to page 1 when data is updated and you are on a page that no longer exists  #698
   • Fixes Native filter does not work with pagination after page 0 #782
   • Fixes Table does not default to page 1 after filtering #635

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Pagination buttons now work in the example from 834:

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Pagination buttons are are now visible here: https://dash.plotly.com/datatable/interactivity

[alexcjohnson]

Fantastic! 💃

If you merge dev back in here the CI tests should run correctly again.