Alex Waygood 38bfda94ce [syntax-errors] Improve error message and range for pre-PEP-614 decorator syntax errors (#16581) ...

## Summary

A small followup to https://github.com/astral-sh/ruff/pull/16386. We now
tell the user exactly what it was about their decorator that constituted
invalid syntax on Python <3.9, and the range now highlights the specific
sub-expression that is invalid rather than highlighting the whole
decorator

## Test Plan

Inline snapshots are updated, and new ones are added.

2025-03-17 11:17:27 +00:00

..

err

[syntax-errors] Improve error message and range for pre-PEP-614 decorator syntax errors (#16581)

2025-03-17 11:17:27 +00:00

ok

[syntax-errors] Improve error message and range for pre-PEP-614 decorator syntax errors (#16581)

2025-03-17 11:17:27 +00:00