[DataGrid] Fix an error when deleting pinned row using actions column button

[cherniavskii]

Fixes #7580

The issue is not reproducible on the next branch.

Before: https://codesandbox.io/s/affectionate-leakey-vpmrzi?file=/demo.js
After: https://codesandbox.io/s/gallant-rhodes-wqzu6n?file=/demo.js

[mui-bot]

These are the results for the performance tests:

Test case	Unit	Min	Max	Median	Mean	σ
Filter 100k rows	ms	577.9	1,010.5	600.8	808.84	187.287
Sort 100k rows	ms	729.6	1,161	729.6	960.5	169.554
Select 100k rows	ms	169	395.8	237.4	268.94	77.091
Deselect 100k rows	ms	153.4	309.3	205.3	232.3	57.943

Generated by 🚫 dangerJS against e7444b9