patch 8.2.3732: "set! termcap" test fails

Problem:    "set! termcap" test fails.
Solution:   Account for keys without a t_xx entry.
diff --git a/src/testdir/test_set.vim b/src/testdir/test_set.vim
index 4035248..f38ac33 100644
--- a/src/testdir/test_set.vim
+++ b/src/testdir/test_set.vim
@@ -62,7 +62,7 @@
   endfor
   call assert_true(keys_idx < len(lines))
   " three columns
-  call assert_match('t_.. .*t_.. .*t_.. ', lines[keys_idx + 1])
+  call assert_match('<[^>]*> .*<[^>]*> .*<[^>]*> ', lines[keys_idx + 1])
 
   let more_lines = split(execute('set! termcap'), "\n")
   for i in range(len(more_lines))