The previous default, 262.9593.0, is a JetBrains EAP-style build that has
expired: intellij-server exits at startup with "This build of intellij-server
has expired", so every Kotlin symbolic tool fails. 263.4702.0 is the newest
release on Kotlin/kotlin-lsp and starts normally.
Uses the same archive layout and CDN path as 262.9593.0. Hashes regenerated
with scripts/update_downloaded_dependency_hashes.py.
Fixes#2008
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
