fix(mui): make useDataGrid filter debounce configurable

[slegarraga]

Summary

• add a filterDebounceMs option to useDataGrid for server-side filtering
• keep the existing 300ms default while allowing consumers to override or disable the debounce
• add a focused spec that verifies the configured debounce delays the server request while keeping the filter UI responsive

Testing

• pnpm --filter @refinedev/mui test -- src/hooks/useDataGrid/index.spec.ts
• pnpm biome check packages/mui/src/hooks/useDataGrid/index.ts packages/mui/src/hooks/useDataGrid/index.spec.ts

Closes #7369

[changeset-bot]

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Latest commit: e0bff88

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[arndom]

Looks good @slegarraga, add the changeset and the reviewers should have no issue with it