Vim: v9.1.0474

* vim c593b9ead...2d88210b3 (6):
  > runtime(kdl): include syntax, indent and ftplugin files
  > patch 9.1.0474: CI: Test_ColonEight() fails on github runners
  > runtime(deb822sources): add missing Enabled field in syntax script
  > runtime(svelte): basic svelte ftplugin file
  > patch 9.1.0473: term_start() does not clear vertical modifier
  > runtime(termdebug): fix mousemodel restoration by comparing against null_string

https://github.com/vim/vim-appimage/actions/runs/9457788761