docs: update truncation examples

[larsrickert]

Relates to #1266

• Update truncation examples to use the style attribute instead of a Storybook decorator so it is included in the generated source code
• remove code duplication for the OnyxTable examples

[changeset-bot[bot]]

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Latest commit: 839704611412b86102508c2c1ecec9a83e31e23d

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