Use abi3 wheels to reduce release build time

[myeolinmalchi]

Summary

• Enable PyO3 abi3-py310 so one wheel supports Python 3.10+
• Reduce the release wheel matrix from per-Python builds to one build per platform
• Align the CI wheel smoke test with PyPI-compatible wheel output

Impact

This reduces release wheel builds from 12 jobs to 3 jobs while keeping Python 3.10+ support through cp310-abi3 wheels.

Verification

• cargo test
• uv run --python 3.12 --extra dev pytest
• uv run --python 3.12 --extra dev ruff check .
• uv run --python 3.12 --extra dev mypy python/hangulang
• uv run --python 3.12 --extra dev maturin build --interpreter python --compatibility pypi --out target/abi3-check