patch 8.2.2394: Vim9: min() and max() return type is "any"

Problem:    Vim9: min() and max() return type is "any".
Solution:   Use return type "number". (closes #7728)

src/evalfunc.c

@@ -1219,7 +1219,7 @@ static funcentry_T global_functions[] =
     {"matchstrpos",	2, 4, FEARG_1,	    NULL,
 			ret_list_any,	    f_matchstrpos},
     {"max",		1, 1, FEARG_1,	    NULL,
-			ret_any,	    f_max},
+			ret_number,	    f_max},
     {"menu_info",	1, 2, FEARG_1,	    NULL,
 			ret_dict_any,
 #ifdef FEAT_MENU
@@ -1229,7 +1229,7 @@ static funcentry_T global_functions[] =
 #endif
 			},
     {"min",		1, 1, FEARG_1,	    NULL,
-			ret_any,	    f_min},
+			ret_number,	    f_min},
     {"mkdir",		1, 3, FEARG_1,	    NULL,
 			ret_number_bool,    f_mkdir},
     {"mode",		0, 1, FEARG_1,	    NULL,

src/testdir/test_vim9_builtin.vim

@@ -655,6 +655,34 @@ def Test_maparg_mapset()
   nunmap <F3>
 enddef
 
+def Test_max()
+  g:flag = true
+  var l1: list<number> = g:flag
+          ? [1, max([2, 3])]
+          : [4, 5]
+  assert_equal([1, 3], l1)
+
+  g:flag = false
+  var l2: list<number> = g:flag
+          ? [1, max([2, 3])]
+          : [4, 5]
+  assert_equal([4, 5], l2)
+enddef
+
+def Test_min()
+  g:flag = true
+  var l1: list<number> = g:flag
+          ? [1, min([2, 3])]
+          : [4, 5]
+  assert_equal([1, 2], l1)
+
+  g:flag = false
+  var l2: list<number> = g:flag
+          ? [1, min([2, 3])]
+          : [4, 5]
+  assert_equal([4, 5], l2)
+enddef
+
 def Test_nr2char()
   nr2char(97, true)->assert_equal('a')
 enddef

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2394,
 /**/
     2393,
 /**/