patch 8.2.2665: test failures

Problem:    Test failures.
Solution:   Check more specific feature.  Add missing change.
diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index 766a5bc..7897db0 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -133,7 +133,7 @@
 enddef
 
 def Test_balloon_split()
-  CheckFeature balloon_eval
+  CheckFeature balloon_eval_term
 
   assert_fails('balloon_split(true)', 'E1174:')
 enddef