Github importer have a mechanism to re-schedule an Importer job if it
gets throttled. But, repositories with large number of pull requests,
were in a _throttling loop_ for the Pull Request Reviews Importer.

In other words, when re-scheduled, the job was re-starting importing
reviews to all imported Pull Requests, regardless if already imported
or not, causing another throttling.

To fix this, already imported Pull Requests ids are being cached and
skipped, this way, when the job re-start, we don't do requests related
to already imported Pull Requests.

The same is applied to the Pull Request MergedBy importer.

Related to: https://gitlab.com/gitlab-org/gitlab/-/issues/329552

Changelog: changed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/60668

Revert "Merge branch 'use-changes_size-from-gitlab-dangerfiles' into 'master'"

See merge request gitlab-org/gitlab!60897

Add Packages and Registries menu

See merge request gitlab-org/gitlab!60488

Update Gitaly version

See merge request gitlab-org/gitlab!60895

Refactor find to findComponent: app_spec.js

See merge request gitlab-org/gitlab!60839

Refactor shared board action [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!60571

This reverts merge request !58130

Refactor test to use findComponent

See merge request gitlab-org/gitlab!60727

Scope feature flag :sidebar_refactor to user

See merge request gitlab-org/gitlab!60887

Test user visiting boards path with search params

See merge request gitlab-org/gitlab!60689

Fix confidential_note_events parameter documentation

See merge request gitlab-org/gitlab!60785

Review feedback

Reverting a commit | E2E

See merge request gitlab-org/gitlab!58743

E2E: Revert removal of initial password setup in tests, update implementation of handling expired password

See merge request gitlab-org/gitlab!60469

E2E: Revert removal of initial password setup in tests, update implementation of handling expired password

Jira issues root cleanup

See merge request gitlab-org/gitlab!60468

Update default branch name in merge request specs

See merge request gitlab-org/gitlab!60623

Fix view rendering that fails in Rails 6.1

See merge request gitlab-org/gitlab!60817

Rename ServiceParams to Integrations::Params

See merge request gitlab-org/gitlab!60649

Document Praefect's repository specific primary elector

See merge request gitlab-org/gitlab!60492

Fix ruby test to use correct meta tag

See merge request gitlab-org/gitlab!60844

Use faker unique method to make sure filepath is always different

See merge request gitlab-org/gitlab!60665

- use toMatchObject to test props

Add not support for epic boards filtered search

See merge request gitlab-org/gitlab!60310

- remove redundant issuable_tabs logic
- set issuesListLoading to false initially

Separate feature categories in PipelinesController

See merge request gitlab-org/gitlab!60698

Refactor fetchLists action

Fix broken links to GDK installation instruction

See merge request gitlab-org/gitlab!60782

Updates to E2E beginners guide

See merge request gitlab-org/gitlab!60756

Update link for UX Guide

See merge request gitlab-org/gitlab!60795

Update dependency core-js to ^3.11.2

See merge request gitlab-org/gitlab!60829

DRY parameters