Add View entire blame button

What does this MR do and why?

Contributes to #369858 (closed)

Problem

The blame pagination affects the UX of users who work with large files.

Solution

Add a button to allow users to load the full page without the pagination.

Screenshots or screen recordings

How to set up and validate locally

Open the blame view for a file with many lines.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.