patch 9.1.1230: inconsistent CTRL-C behaviour for popup windows

Problem:  Ctrl-C closes popup windows that have a filter callback,
          but does not close popups without a filter callback.
Solution: Modified popup_do_filter() to also close popups without
          filter callback when Ctrl-C is pressed (glepnir).

fixes: #16839
closes: #16928

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/version9.txt b/runtime/doc/version9.txt
index 6ecf642..377ab2a 100644
--- a/runtime/doc/version9.txt
+++ b/runtime/doc/version9.txt
@@ -1,4 +1,4 @@
-*version9.txt*  For Vim version 9.1.  Last change: 2025 Mar 19
+*version9.txt*  For Vim version 9.1.  Last change: 2025 Mar 21
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -41653,6 +41653,7 @@
 - add |dist#vim9#Launch()| and |dist#vim9#Open()| to the |vim-script-library|
   and decouple it from |netrw|
 - new digraph "APPROACHES THE LIMIT" using ".="
+- |CTRL-C| always closes the active |popup-window|.
 
 							*added-9.2*
 Added ~