patch 8.2.2484: Vim9: Cannot use a comment starting with #{

Problem:    Vim9: Cannot use a comment starting with #{ after an expression.
Solution:   Remove the check for "{" since #{ dictionaries are not supported.

src/ex_docmd.c

@@ -5212,8 +5212,7 @@ ends_excmd2(char_u *cmd_start UNUSED, char_u *cmd)
 	return TRUE;
 #ifdef FEAT_EVAL
     if (in_vim9script())
-	return c == '#' && cmd[1] != '{'
-				 && (cmd == cmd_start || VIM_ISWHITE(cmd[-1]));
+	return c == '#' && (cmd == cmd_start || VIM_ISWHITE(cmd[-1]));
 #endif
     return c == '"';
 }

src/testdir/test_vim9_script.vim

@@ -2205,6 +2205,10 @@ def Test_while_loop()
     result ..= cnt .. '_'
   endwhile
   assert_equal('1_3_', result)
+
+  var s = ''
+  while s == 'x' #{comment
+  endwhile
 enddef
 
 def Test_while_loop_fails()

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2484,
 /**/
     2483,
 /**/