BAI-461 Update next/legacy/image to next/image

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[PE39806]

The files in frontend/pages/docs/v1 still use import Image from 'next/legacy/image'. Even though they are "hidden" from the left navigation panel they are still accessible so require either completely removing or updating as with the rest of the files.

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✅ PE39806
❌ KW86022

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[PE39806]

The files in frontend/pages/docs/v1 still use import Image from 'next/legacy/image'. Even though they are "hidden" from the left navigation panel they are still accessible so require either completely removing or updating as with the rest of the files.

I've gone with updating the files as they are still wanted from a legacy perspective.

I've acted on my own review so need someone else to independently review this.