vim: Import v9.1.0990

* 9.1.0990: Inconsistent behavior when changing cmdheight
* 9.1.0989: Vim9: Whitespace after the final enum value causes a syntax error

Author: github-actions[bot]

gitlog.txt

@@ -1 +1 @@
-* [runtime(java): Quietly opt out for unsupported markdown.vim versions](https://github.com/vim/vim/commit/cd96075cdee6b606c6e39aa1aed19b7cdc867df8)\n* [runtime(vim): fix failing vim syntax test](https://github.com/vim/vim/commit/6139766e825ca34948223cb4c88d3900b1940a17)\n* [9.1.0988](https://github.com/vim/vim/commit/b04af4cc9636ccbadc625e743a265a394bd48943): Vim9: no error when using uninitialized var in new()\n* [runtime(doc): update index.txt](https://github.com/vim/vim/commit/27f2e473e1d6077264b214e58995001383162705)\n* [9.1.0987](https://github.com/vim/vim/commit/a407573f30a978b3aa61532bbd9b0ae94a87dc32): filetype: cake files are not recognized\n* [9.1.0986](https://github.com/vim/vim/commit/58c44e8833365e1a777330491c2799ae324ed893): filetype: 'jj' filetype is a bit imprecise\n* [runtime(jj): Support diffs in jj syntax](https://github.com/vim/vim/commit/bde76da4d02d93d8ea9e523d1057d59a19de276a)\n* [runtime(vim): Update matchit pattern, no Vim9 short names](https://github.com/vim/vim/commit/fc61cfd60e6d99765d1a68d39d6613e0917c7c56)\n* [9.1.0985](https://github.com/vim/vim/commit/aa979c763da2fa7ede2416a1ab8de7a46d88cd04): Vim9: some ex commands can be shortened
+* [9.1.0990](https://github.com/vim/vim/commit/e15cbc1af47e9dea90448c714eb4908e5d4302fc): Inconsistent behavior when changing cmdheight\n* [9.1.0989](https://github.com/vim/vim/commit/dbe39edb29cf5f899d475ee783a059cb6f678286): Vim9: Whitespace after the final enum value causes a syntax error