Summary

This unskips the lone-surrogate-string-values fixture for AST round-tripping and scope rename coverage.

The old TODO points at an SWC conversion helper that is no longer present in this checkout. The fixture now passes through the existing JsString marker/code-unit-preserving path, so it should be covered by the tests instead of staying listed as a known failure.

How I tested

• cargo test -p react_compiler_ast round_trip_all_fixtures
• cargo test -p react_compiler_ast scope_resolution_rename
• cargo test -p react_compiler_diagnostics js_string
• cargo fmt --check
• git diff --check