vim: Import v8.2.2756

* 8.2.2756: Vim9: blob index and slice not implemented yet
* 8.2.2755: Vim9: no error for using a number in a condition
* 8.2.2754: :sleep! does not always hide the cursor

gitlog.txt

@@ -1 +1 @@
-* [8.2.2753](https://github.com/vim/vim/commit/f93bbd026205f36915312193784f987ad49fb114): Vim9: cannot ignore an item in assignment unpack\n* [8.2.2752](https://github.com/vim/vim/commit/e8e307818495d1a5d821df9bd4bde83add0520e5)\n* [8.2.2751](https://github.com/vim/vim/commit/fed9e830fcffa90cf73dd125a27d27ed7eafbd68): Coverity warns for using NULL pointer\n* [8.2.2750](https://github.com/vim/vim/commit/da479c7597a61c4d50c842df21c9294bd9bf1037): Vim9: error for using underscore in nested function\n* [8.2.2749](https://github.com/vim/vim/commit/fe95b94ffa75c4925ad16c43f94092f2b1d35fc6): Vim9: test for error can be a bit flaky\n* [8.2.2748](https://github.com/vim/vim/commit/c4297697761230489a025b3e39b992cca845b1b3): Vim9: memory leak when calling :def function fails\n* [8.2.2747](https://github.com/vim/vim/commit/bb8a7ce0a1bcfafca715275dbadc2ead612f82dd): Vim9: not always an error for too many function arguments\n* [8.2.2746](https://github.com/vim/vim/commit/87795939d01932b0d8155fd69c7494fa51c523f3): check for duplicate arguments does not work\n* [8.2.2745](https://github.com/vim/vim/commit/51e7e78de7320a734ddc2d7931e767bccaf7e6f2): Vim9: missing part of the argument change\n* [8.2.2744](https://github.com/vim/vim/commit/962c43bf0d6a33b905f2acd920d3701476ebb5c9): Vim9: no way to explicitly ignore an argument\n* [8.2.2743](https://github.com/vim/vim/commit/599410cb3cb19946cd6df22441da5de003e114bb): Vim9: function state stuck when compiling with ":silent!"\n* [8.2.2742](https://github.com/vim/vim/commit/701cc6ca9e940665a9424541f989bb38c853a498): Vim9: when compiling a function fails it is cleared
+* [8.2.2756](https://github.com/vim/vim/commit/cfc3023cb6ce5aaec13f49bc4b821feb05e3fb03): Vim9: blob index and slice not implemented yet\n* [8.2.2755](https://github.com/vim/vim/commit/af8ea0d066d31cf3cd0a39c5c49ce0342728588d): Vim9: no error for using a number in a condition\n* [8.2.2754](https://github.com/vim/vim/commit/09f067fca38c9f89ad088e8c096c4df3998575e2): :sleep! does not always hide the cursor