patch 8.2.1142: Vim9: return type of insert() is any

Problem:    Vim9: return type of insert() is any.
Solution:   Use type of the first argument.
diff --git a/src/evalfunc.c b/src/evalfunc.c
index b015f6d..65c34cd 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -667,7 +667,7 @@
     {"inputrestore",	0, 0, 0,	  ret_number,	f_inputrestore},
     {"inputsave",	0, 0, 0,	  ret_number,	f_inputsave},
     {"inputsecret",	1, 2, FEARG_1,	  ret_string,	f_inputsecret},
-    {"insert",		2, 3, FEARG_1,	  ret_any,	f_insert},
+    {"insert",		2, 3, FEARG_1,	  ret_first_arg, f_insert},
     {"interrupt",	0, 0, 0,	  ret_void,	f_interrupt},
     {"invert",		1, 1, FEARG_1,	  ret_number,	f_invert},
     {"isdirectory",	1, 1, FEARG_1,	  ret_number,	f_isdirectory},
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 8b83d77..65b5257 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -918,6 +918,15 @@
   assert_equal(6, res)
 enddef
 
+def Test_insert_return_type()
+  let l = insert([2, 1], 3)
+  let res = 0
+  for n in l
+    res += n
+  endfor
+  assert_equal(6, res)
+enddef
+
 def Test_filter_return_type()
   let l = filter([1, 2, 3], {-> 1})
   let res = 0
diff --git a/src/version.c b/src/version.c
index 47d4bcc..6d4d6e9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1142,
+/**/
     1141,
 /**/
     1140,