fix: empty filter value request issue for `useDataGrid`

[salihozdemir]

• Prevented server request when empty filter value is provided.
• Added singleSelect type column to category and status columns in Material UI examples for filter accordingly to relational data.

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In progress.

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🦋 Changeset detected

Latest commit: 992cfc2fa50f5988993f9a0af9f6c1dd4e72260f

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