[css-2025][css-inline-3] Add `text-box-trim` and `text-box-edge` to Safe to Release exceptions

[SebastianZ]

Splitting the discussion from #10687 for adding text-box-trim and text-box-edge from CSS Inline Layout 3 to the Safe to Release pre-CR Exceptions section of the CSS Snapshot 2025.

Data to consider:

• Spec. status: WD (last published: 18 December 2024)
• experimentally implemented in Safari, Chrome, and Edge
• WPT: passing tests (experimental): Chrome: 252, Edge: 252, Firefox: 66, Safari: 238; interop between Chrome, Edge, and Safari: 198 / 294 (67.3%)
• Open issues: on GitHub: 17, in spec.: 2 (1 editorial)

Summary: Low interoperability, many open issues

Sebastian