fix(Dataset): allow public dataset access in v4 findById endpoint for unauthenticated users

[abdimo101]

Description

This PR allows unauthenticated users to access published datasets through the V4 findById endpoint. The @CheckPolicies decorator now checks for both DatasetRead and DatasetReadOnePublic permissions just like in the V3 findById .

Motivation

Fixes

• Bug fixed (#X)

Changes:

• changes made

Tests included

• Included for each change/fix?
• Passing?

Documentation

• swagger documentation updated (required for API changes)
• official documentation updated

official documentation info

Summary by Sourcery

Bug Fixes:

• Fix v4 dataset findById authorization to permit access to publicly published datasets without authentication, consistent with v3 behavior.

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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[HayenNico]

Hi @abdimo101,
the DatasetReadOnePublic action/permission is only granted to unauthenticated users, who are forbidden from using any endpoints in datasets.v4.controller.ts by design. An unauthenticated user should use the /api/v4/datasets/public endpoints defined in datasets-public.v4.controller.ts instead