patch 8.2.4089: terminal test for current directory fails on FreeBSD

Problem:    Terminal test for current directory fails on FreeBSD.
Solution:   Skip the test.

src/testdir/test_terminal3.vim

@@ -779,6 +779,8 @@ endfunc
 func Test_terminal_sync_shell_dir()
   CheckUnix
   " The test always use sh (see src/testdir/unix.vim).
+  " BSD's sh doesn't seem to play well with the OSC 7 escape sequence.
+  CheckNotBSD
 
   set asd
   " , is

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4089,
 /**/
     4088,
 /**/