Support force_reindex in the model Zoekt index methods for IndexingTaskWorker
## Background `Search::Zoekt.index_async` and `Search::Zoekt.index_in` should support the force reindex for the task approach ## Proposal Send the task type `force_index_repo` if there is `force` in the `option` https://gitlab.com/gitlab-org/gitlab/-/blob/bb08d86fe0455a63d32930cd1a7caacd9769871c/ee/app/models/search/zoekt.rb#L44 https://gitlab.com/gitlab-org/gitlab/-/blob/bb08d86fe0455a63d32930cd1a7caacd9769871c/ee/app/models/search/zoekt.rb#L51 <!-- Please add a label for the type of maintenance as per https://about.gitlab.com/handbook/engineering/metrics/#work-type-classification -->
issue