Delete Project and related data in ES if use_elasticsearch? is false

What does this MR do and why?

• This MR will call the ElasticDeleteProjectWorker from ElasticWikiIndexerWorker if the Project does not exist or .use_elasticsearch? is false. We should remove the project and associated ES documents if the Project is deleted or it is not using elasticsearch.

• This MR will call the ElasticDeleteProjectWorker from ElasticCommitIndexerWorker if use_elasticsearch? is false for the Project.

• Also removing the space_requirements from the migration file as it is not used.

• If the ee/lib/gitlab/elastic/indexer.rb if the commit is not found, then we are calling purge_unreachable_commits_from_index!

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.

Related to #410777