fix: notification type not correctly rendered in antd and mantine providers

[deepshekhardas]

Summary

• @refinedev/antd: notificationProvider now calls the notification.success / notification.error / notification.info / notification.warning shortcut methods instead of passing an unsupported type option to notification.open(). antd's open() has no type option, so it was silently dropped and every non-progress notification rendered with no icon/color.
• @refinedev/mantine: notificationProvider now maps each notification type to its own color and icon (via a notificationStyleByType map) instead of collapsing every non-success type into the same red/error styling.
• @refinedev/core: widened OpenNotificationParams.type to "success" | "error" | "progress" | "info" | "warning" and made it optional.

Fixes #7477
Resolves #6326

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