vim: Import v9.1.1276

* 9.1.1276: inline word diff treats multibyte chars as word char
* runtime(doc): update WinScrolled documentation

Author: github-actions[bot]

gitlog.txt

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-* [runtime(vim): Update base-syntax, improve :set backslash handling](https://github.com/vim/vim/commit/2a6be835122d906c6ec10682c2a771b25c87c611)\n* [9.1.1275](https://github.com/vim/vim/commit/d211558044c710d1d5f17f5fd4687f0c769deab2): MS-Windows: Not possible to pass additional flags to Make\_mvc\n* [9.1.1274](https://github.com/vim/vim/commit/6fa62085ffbfb3c69636da857574a017783f0410): Vim9: no support for object\<type> as variable type\n* [9.1.1273](https://github.com/vim/vim/commit/f16d8b2dda077d8252c3f7d19e6a5bc15d1d51c1): Coverity warns about using uninitialized value\n* [9.1.1272](https://github.com/vim/vim/commit/3e50a28a03d136c1e0c1f4fabe50d97faaf08c5c): completion: in keyword completion Ctrl\_P cannot go back after Ctrl\_N\n* [runtime(sh): Update syntax file, command substitution opening paren at EOL](https://github.com/vim/vim/commit/6099db9a60d1c047bf9c8feee3e1689c4e653250)\n* [9.1.1271](https://github.com/vim/vim/commit/e74ec3f523a152f62a37cc3ab476f0e5a2e812c6): filetype: Power Query files are not recognized\n* [translation(ru): fix and updated messages translation](https://github.com/vim/vim/commit/c1e019247d35b61c7a514c853d067ac490aed79d)\n* [runtime(doc): clarify the use of change marks when writing a buffer](https://github.com/vim/vim/commit/df68419ba0c911ff3b49c7f4835d9f29f0dd8f77)
+* [9.1.1276](https://github.com/vim/vim/commit/9aa120f7ada592ed03b37f4de8ee413c5385f123): inline word diff treats multibyte chars as word char\n* [runtime(doc): update WinScrolled documentation](https://github.com/vim/vim/commit/b8d5c8509998f3a97ffe42f674352b07749cd119)