Add back author information deleted by bulk metadata processing script

Since the start of the bulk metadata processing script in January 2025 there has been a problem with author information (affiliation, ORCID, script variants) getting deleted by metadata corrections.
See #4353

The problem persisted until end of October 2025 (afterwards there was still a problem with information getting swapped between co-authors if author order changed).

This issue documents the desire to add back the previously deleted information.

Due to the long time span one might think of ways of automation or prioritize non-affiliation information first.
ORCIDs and script variants were rarely present, making it more feasible to add them manually. ORCIDs are also beneficial for the new author representation system.

Opened this issue after my comment here: https://github.com/acl-org/acl-anthology/issues/6327#issuecomment-3572402306

To Do:

- [ ] Bulk metadata corrections 2025-10-24 : orcid and affiliations
- [ ] Bulk metadata corrections 2025-10-20 : affiliations
- [ ] Bulk metadata corrections 2025-10-15 : orcid and affiliations
- [ ] Bulk metadata corrections 2025-10-06 : orcid and affiliations
- [ ] Bulk metadata corrections 2025-09-25 : orcid and affiliations
- [ ] Bulk metadata corrections 2025-09-12 : affiliations (< 5 papers)
- [ ] Bulk metadata corrections 2025-09-09 : affiliations (< 5 papers)
- [ ] Bulk metadata corrections 2025-09-08 : affiliations (< 5 papers)
- [ ] Bulk metadata corrections 2025-08-28 : affiliations, hani script variants
- [ ] Bulk metadata corrections 2025-08-18 : affiliations
- [ ] Bulk metadata corrections 2025-08-12 : affiliations
- [ ] Bulk metadata corrections 2025-08-03 : affiliations, ?
- [ ] Bulk metadata corrections 2025-07-21 : affiliations
- [ ] Bulk metadata corrections 2025-07-11 : affiliations (only 2 papers affected)
- [ ] Bulk metadata corrections 2025-06-24 : affiliations
- [ ] Bulk metadata corrections 2025-06-04 : affiliations
- [ ] Bulk metadata corrections 2025-05-21 : affiliations
- [ ] Bulk metadata corrections 2025-05-09 : affiliations, ?
- [ ] Bulk metadata corrections 2025-04-15 : affiliations (only 1 paper affected?)
- [ ] Bulk metadata corrections 2025-04-07 : affiliations
- [ ] Bulk metadata corrections 2025-03-26 : affiliations
- [ ] Bulk metadata corrections 2025-03-17 : affiliations
- [ ] Bulk metadata corrections 2025-02-21 : affiliations
- [ ] Bulk metadata corrections 2025-02-08
- [ ] Bulk metadata corrections 2025-02-02
- [ ] Bulk metadata corrections 2025-01-21
- [ ] Bulk metadata corrections 2025-01-09
- [ ] Bulk metadata corrections 2025-01-01
- [ ] are there any PRs without "Bulk" in title that performed metadata corrections via the script?

Start by reading the bulk metadata processing script context and the related discussions in #4353 and #6327, then inventory the listed correction batches and any other metadata-correction PRs. Done means restoring affected affiliations, ORCIDs, and script variants without swapping co-author data, with every listed batch reviewed and checked off.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.