Add Central and Eastern European PII language packs

[maziyarpanahi]

Description

Adds Ukrainian, Czech, and Greek as fully supported PII language packs. Ukrainian receives a Cyrillic-native detector pack and weighted-checksum RNOKPP support; the existing Czech and Greek packs are promoted from identifier-only coverage to the multilingual privacy-filter family.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code refactoring
• Performance improvement
• Test addition/improvement

Changes Made

• Add Ukrainian date, phone, RNOKPP, address, and postcode patterns with exact-offset golden coverage.
• Wire Ukrainian, Czech, and Greek through supported-language constants, script routing, locale-aware deterministic ID providers, service/client enums, OpenAPI, and model-manifest aliases.
• Add locale fake data, synthetic training templates, month names, round-trip regression tests, and synchronized public language documentation.

Testing

• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have tested this change with different models/inputs

Validation completed:

• .venv/bin/python -m pytest tests/ -q — 5,222 passed, 55 skipped
• make format
• make lint
• make format-check
• make docs-build
• uv build
• scoped pre-commit checks for every changed file

Documentation

• I have updated the documentation accordingly
• I have added docstrings to new functions/classes
• I have updated the CHANGELOG.md

Code Quality

• I ran make format, make lint, and make format-check
• For Swift/OpenMedKit changes, I ran make format-swift and make lint-swift
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings

Dependencies

• I have not added any new dependencies
• OR I have added new dependencies and they are justified because: ____

Checklist

• I have read the contributing guidelines
• My commits have clear, descriptive messages
• I have squashed/organized my commits appropriately

Related Issues

Closes #1462

Screenshots/Examples

Not applicable; this change affects library, service-contract, fixture, and documentation surfaces.