[DataGrid] Fix value type in filter model for number and boolean column type

[k-rajat19]

Fixes #14327

Currently, number and boolean column types store filter item value in filter model as a string type (see demo) we should rather store these values according to their respective column type (we already do that for date and dateTime column types).

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[mui-bot]

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[k-rajat19]

@romgrk, can you please look at these changes when you have time?