chore: update unisim-core to 1.7.2

[TATP-233]

Summary

• Raised the base and optional SuperDex UniSim requirements to unisim-core>=1.7.2.
• Relocked both standard and ROCm profiles. The standard profile now resolves unisim-core==1.7.2 and superdex-*-uni==1.3.0; the ROCm profile resolves unisim-core==1.7.2.
• Updated the bilingual backend-contract requirement and added a bilingual unreleased changelog entry.

Compatibility

UniSim 1.7.2 consumes the released SuperDex portable-scene work, including physical kinematic roots, portable collision-disabled mirrors, and scoped selected-control reset restoration. This keeps UniLab on the released PyPI package rather than a Git-source override.

Release references:

• UniSim release PR: chore: release unisim-core 1.7.2 unilabsim/unisim#232
• UniSim release: https://github.com/unilabsim/unisim/releases/tag/v1.7.2
• PyPI: https://pypi.org/project/unisim-core/1.7.2/

UniSim issues #124 and #154 remain open for later portable-scene slices.

Changed files

• pyproject.toml
• pyproject.rocm.toml
• uv.lock
• uv.rocm.lock
• docs/sphinx/source/changelog.md
• docs/sphinx/source/en/4-developer_guide/2-contracts/2-backend_contract.md
• docs/sphinx/source/zh_CN/4-developer_guide/2-contracts/2-backend_contract.md

Validation

• uv lock — resolved 250 packages; updated unisim-core 1.7.1 → 1.7.2 and SuperDex wheels 1.1.0 → 1.3.0.
• ROCm profile uv lock (temporary active-profile swap) — resolved 178 packages; updated unisim-core 1.6.0 → 1.7.2.
• uv lock --check — passed.
• ROCm profile uv lock --check (temporary project copy) — passed.
• uv run --extra superdex pytest tests/base/test_backend_imports.py tests/envs/test_multi_entity_consumer.py -q — 8 passed, 2 skipped.
• uv run pytest tests/scripts/test_check_docs.py -q — 19 passed.
• make check — passed. Existing mypy annotation notes, one existing optional Drake import warning from Pyright, and Pyright update notice only.
• make test-all — passed: 1496 passed, 23 skipped, 601 deselected, 14 existing warnings; benchmark import smoke passed 34/34 module mode and 35/35 script mode.
• git diff --check — passed.