[Review] Review and refine appendices/migration72 translation files

[argosback]

Summary

Review and refine all translation files in the appendices/migration72 directory to ensure full alignment with doc-en and project quality standards.

Key Changes

• Technical Term & Literal Fixes:
  • Fixed French terminology typos (hachage/hachages -> hash/hashes) in incompatible.xml.
  • Refined section title (Tabla de hash de contraseña -> Hash de contraseñas) in constants.xml.
• Style & Tone Compliance (Impersonalization):
  • Replaced literal passive structures with formal impersonal forms in Spanish (e.g., se crea una variable instead of una variable es creada).
  • Audited and eliminated any 2nd-person singular forms (tú, puedes, etc.).
• Coherence & Glossary Corrections:
  • Replaced namespaces with espacios de nombres in new-features.xml.
  • Replaced extensión de archivo and archivo php.ini with extensión de fichero and fichero php.ini per project glossary rules.
  • Standardized usage of string data type terms in deprecated.xml.
• Verification:
  • All modifications have been side-by-side validated and are in perfect structural and technical synchrony with the English source files.