Revert "Merge branch 'lazy-load-contribution-analytics' into 'master'"

What does this MR do and why?

Related issue: #376001 (closed)

Reverts !108273 (merged) due to lack of GraphQL pagination. The original MR assumed that the full contribution dataset would be returned in a single GraphQL request. In reality only the first 100 users were returned resulting in incomplete data on the page.

How to set up and validate locally

Bug can be seen in production here. There should be more data shown on the page, but it's being restricted to the first 100 users.

See original MR to test locally.

MR acceptance checklist

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