Updated post-extraction workflow to process for phase-2 entities too

[exfalsoquodlibet]

Summary

Updated workflow YAML file so that phase-2 extracted entities are also post-processed, aggregated and counted and made available in final format to users.

Checklists

This pull/merge request meets the following requirements:

• [x] code runs
• [x] developments are ethical and secure
• [x] you have made proportionate checks that the code works correctly
• [x] test suite passes
• [x] developments adhere to AQA plan (see docs/aqa/aqa_plan.md)
• [ ] data log updated (see docs/aqa/data_log.md), if necessary
• [ ] assumptions, and caveats log updated (see docs/aqa/assumptions_caveats.md), if necessary
• [x] minimum usable documentation written in the docs folder

Comments have been added below around the incomplete checks.