chore: refresh the shipped datasets

[github-actions]

Weekly regeneration of the corpora committed under
frontend/public/. What the build scripts reported:

ATT&CK v19.2 : {'attack-pattern': 918, 'intrusion-set': 180, 'malware': 856, 'tool': 97} -> attack-dataset.json (166 Ko)
  enterprise +1698 (v19.2), mobile +248 (v19.2), ics +105 (v19.2)
F3 v1.1 : 123 techniques (43 ATT&CK, 80 F3), 8 tactics -> f3-dataset.json (17 Ko)
  read from f3-v1.1.json, the most recent published native file
  16 names taken back from ATT&CK (F3 spells sub-techniques by full path)
  flagged isAttack but absent from our Enterprise dataset, F3 spelling kept:
    T1586.004 (Compromise Accounts: Corporate Accounts)
    T1672 (Email Spoofing)
ATLAS 2026.08 : 197 techniques (83 sub-techniques), 16 tactics -> atlas-dataset.json (36 Ko)
  read from dist/v6/ATLAS-2026.08.yaml, reached by following MITRE's own pointers
  42 adapt an ATT&CK technique, and keep their own identifier
  left out: 39 mitigations (course-of-action) and 72 case studies (no STIX object)
AADAPT : 68 techniques (34 sub-techniques), 11 tactics -> aadapt-dataset.json (11 Ko)
  10 of the tactics ARE ATT&CK tactics, 1 is its own
  4 techniques adapt an ATT&CK technique, and keep their own number
  no version published: the 4.4.0 in the file is ATLAS's, inherited by the fork
/home/runner/work/DrawMeAStix/DrawMeAStix/frontend/public/actors-dataset.json: 861 actors
  dropped, ATT&CK already resolves them : 186
  dropped, placeholders naming nobody   : 3
  merged, duplicated inside the galaxy  : 0
  synonyms dropped as contested         : 20
/home/runner/work/DrawMeAStix/DrawMeAStix/frontend/public/countries.json: 249 countries

Worth reading the diff for, rather than merging blind: a name that
moves between the two actor corpora changes which spelling
analysts are offered, and therefore which identifier their objects
get.

The frontend tests FAILED against these files. Something written down beside the datasets no longer agrees with them: a name arbitration, or a number in the framework pages. The run log says which. Fix it on this branch rather than merging.