Inline comments do not work in activity diff

When using inline comments, diff in activity crashes.

See activity section here

[Change Log — v0.7.242 (2025/09/12)](https://front.hc.engineering/browse/?workspace=bb793ec1-252e-4419-8998-7f220ababdfa&_class=document%3Aclass%3ADocument&_id=68c3138d52ce5cdfbb31f073&label=Change%20Log%20%E2%80%94%20v0.7.242%20(2025%2F09%2F12))