fix(pagination): out of boundaries page Grid Preset should be unset

[ghiscoding]

• in the OData example, we have a Grid Preset of page number 2 and that demo also uses local storage, if we keep the Gender filter and also add a Name filter like "G", it results to a total of 9 items and it works fine unless we refresh the page. After a page refresh, and when our page size is set to 20, we are now out of bound and the 9 items weren't showing up because the system thought it was on page 2 even though we shouldn't... So let's make sure to never be out of boundaries and reset to first page when that happens (or page 0 when no items found)
• a side note, I imagine that the issue described above and shown below would probably never happened with a real server since the OData server would never return a page number that is outside of boundaries, which is probably why nobody ever reported the issue
• also add a prop observer on the gridOptions.pagination.totalItems since the user could change it but forgets to call refreshPagination()

[stackblitz[bot]]

Run & review this pull request in StackBlitz Codeflow.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.8%. Comparing base (51560aa) to head (59cb3cf).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1534 +/- ## ======================================== + Coverage 99.8% 99.8% +0.1% ======================================== Files 198 198 Lines 21633 21636 +3 Branches 7227 7089 -138 ======================================== + Hits 21572 21575 +3 Misses 55 55 Partials 6 6 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.