vim: Import v9.1.1957

* 9.1.1957: filetype: bpftrace files are not recognized
* runtime(odin): support underscore-separated numeric literals
* runtime(doc): fix return value in 'exists' and 'exists_compiled()'
* 9.1.1956: tests: test_sort.vim leaves swapfiles behind
* 9.1.1955: sort() does not handle large numbers correctly
* 9.1.1954: Setting a byte in a blob, accepts values outside 0-255
* 9.1.1953: gui_mch_set_titlebar_colors() is excessively called
* runtime(swayconfig): separate identifier groups + cleanup
* runtime(i3config): highlight identifiers separately

Author: github-actions[bot]

gitlog.txt

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+* [9.1.1957](https://github.com/vim/vim/commit/b60b33a9dc91569f803e5a4856244bd8414f1802): filetype: bpftrace files are not recognized\n* [runtime(odin): support underscore-separated numeric literals](https://github.com/vim/vim/commit/c7c16e4130c665fa6abd0c46ac305be61e467c2b)\n* [runtime(doc): fix return value in 'exists' and 'exists\_compiled()'](https://github.com/vim/vim/commit/911ecdcd0e80aa717b871ad94cc19f722014e44b)\n* [9.1.1956](https://github.com/vim/vim/commit/f8c550fea05e4630c3baf83fed8469f7c2824f01): tests: test\_sort.vim leaves swapfiles behind\n* [9.1.1955](https://github.com/vim/vim/commit/04794efe12863eb96a489531c299879e6c8d15d4): sort() does not handle large numbers correctly\n* [9.1.1954](https://github.com/vim/vim/commit/f4a299700e211a728f0f7398eb8fceaf44165711): Setting a byte in a blob, accepts values outside 0-255\n* [9.1.1953](https://github.com/vim/vim/commit/d30e76389ca9bed4346690f759f29295fdcf0f27): gui\_mch\_set\_titlebar\_colors() is excessively called\n* [runtime(swayconfig): separate identifier groups + cleanup](https://github.com/vim/vim/commit/b46cbecb1d02de7df7525a31c4519ed897a0a6ec)\n* [runtime(i3config): highlight identifiers separately](https://github.com/vim/vim/commit/20d35f9eb976cda700d872b94b7760c61c4ad1f8)