runtime(indent-tests): Raise timeouts for "search*()"es

Related to #15974 and #16870.

closes: #17116

Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/indent/testdir/vim.in b/runtime/indent/testdir/vim.in
index 6b894b5..d5cae22 100644
--- a/runtime/indent/testdir/vim.in
+++ b/runtime/indent/testdir/vim.in
@@ -1,6 +1,8 @@
 " vim: set ft=vim sw=4 :
 
 " START_INDENT
+" INDENT_EXE let g:vim_indent = {'searchpair_timeout': 1024}
+" INDENT_EXE runtime autoload/dist/vimindent.vim
 func Some()
 let x = 1
 endfunc