Add repository_size_limit permission checks

What does this MR do and why?

Add repository_size_limit permission checks in the Project/Group services to ensure only users with correct permission can update/create projects and groups with the repository_size_limit param.

Previously to this MR, this check was only done in the view

Refs https://gitlab.com/gitlab-org/gitlab/-/issues/424471

How to set up and validate locally

Reproduction steps discussed in https://gitlab.com/gitlab-org/gitlab/-/issues/424471#problem

MR acceptance checklist

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