vim: Import v8.2.4583

* 8.2.4583: screendump test fails
* 8.2.4582: useless code handling a type declaration
* 8.2.4581: null types not fully tested
* 8.2.4580: Vim9: incorrect error for shadowing variable
* 8.2.4579: cannot use page-up and page-down in the cmdline popup menu
* 8.2.4578: no warning when autoload script for completion has an error
* 8.2.4577: message test is flaky

Author: chrisbra

gitlog.txt

@@ -1 +1 @@
-* [8.2.4576](https://github.com/vim/vim/commit/056678184f679c2989b73bd48eda112f3c79a62f): Vim9: error for comparing with null can be annoying\n* [8.2.4575](https://github.com/vim/vim/commit/139575de6653e7fd5807cb036dfb3684b815c519): Vim9: test for profiling still fails\n* [8.2.4574](https://github.com/vim/vim/commit/48f69cdfa401999ac5ff8cef6d8dcabe3f93e284): Vim9: test for profiling fails\n* [8.2.4573](https://github.com/vim/vim/commit/96923b7a14839e7505b194ab76e1f15bb88fa7ed): a nested function is compiled for debugging without context\n* [8.2.4572](https://github.com/vim/vim/commit/1a572e9b3b497e0412b4001cd9c6859db0c35412): Vim9: return type "any" is changed to first returned type\n* [8.2.4571](https://github.com/vim/vim/commit/8d5e514d77bd4b1956656ad2be2ce7094bd43a72): not all gdb files are recognized\n* [8.2.4570](https://github.com/vim/vim/commit/1fdf84e033f8c4eead3b4ccebb1969cfbc7d10db): no command line completion for :profile and :profdel\n* [8.2.4569](https://github.com/vim/vim/commit/977525fea662b7f37ad0e052894c1f62b5b03269): Coverity warning for not using a return value\n* [8.2.4568](https://github.com/vim/vim/commit/10792feebd237aee89270669e509e85cafdfac60): getmousepos() does not compute the column below the last line
+* [8.2.4583](https://github.com/vim/vim/commit/4f6e772c9cd013a8690ab0f1efecc0ab3e855148): screendump test fails\n* [8.2.4582](https://github.com/vim/vim/commit/4c8b546da2059865e20902586bb3e0ff07c279a0): useless code handling a type declaration\n* [8.2.4581](https://github.com/vim/vim/commit/d597ab00d799aa078be32e6677e01a7582106105): null types not fully tested\n* [8.2.4580](https://github.com/vim/vim/commit/21dc8f1527fc41405b26a26bb0c318c4b7c1b5d4): Vim9: incorrect error for shadowing variable\n* [8.2.4579](https://github.com/vim/vim/commit/5cffa8df7e3c28681b9e5deef6df395784359b6b): cannot use page-up and page-down in the cmdline popup menu\n* [8.2.4578](https://github.com/vim/vim/commit/fe8e9f674036f3206b0080f4a931c991cf142f8b): no warning when autoload script for completion has an error\n* [8.2.4577](https://github.com/vim/vim/commit/9323ca51c2b1522f26907a7b8879067245ebd1be): message test is flaky