[DataGrid] Deprecate pagination page count selector

[MBilalShafi]

Fixes #8450

Changelog

The gridPageCountSelector was deprecated. It may provide an incorrect value when used with the rowCount prop. Use specific selectors and props instead:

-const pageCount = useGridSelector(apiRef, gridPageCountSelector);
+const pageSize = useGridSelector(apiRef, gridPageSizeSelector);
+const visibleTopLevelRowCount = useGridSelector(apiRef, gridFilteredTopLevelRowCountSelector);
+const rowCount = rootProps.rowCount ?? visibleTopLevelRowCount;
+const pageCount = getPageCount(rowCount, pageSize);

[mui-bot]

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Updated pages

No updates.

These are the results for the performance tests:

Test case	Unit	Min	Max	Median	Mean	σ
Filter 100k rows	ms	693	1,337.5	723.4	919.36	230.571
Sort 100k rows	ms	650.6	1,213.3	1,199	1,068.76	212.221
Select 100k rows	ms	229.2	328	299.6	291.74	33.822
Deselect 100k rows	ms	187.4	296.7	269.5	248.2	47.675

Generated by 🚫 dangerJS against 4316668