patch 9.0.1004: suspend test sometimes fails on MacOS

Problem:    Suspend test sometimes fails on MacOS.
Solution:   Wait a short while for terminal responses.

Author: brammool

src/testdir/test_suspend.vim

@@ -2,6 +2,7 @@
 
 source check.vim
 source term_util.vim
+source shared.vim
 
 func CheckSuspended(buf, fileExists)
   call WaitForAssert({-> assert_match('[$#] $', term_getline(a:buf, '.'))})
@@ -21,6 +22,8 @@ func Test_suspend()
   CheckFeature terminal
   CheckExecutable /bin/sh
 
+  call WaitForResponses()
+
   let buf = term_start('/bin/sh')
   " Wait for shell prompt.
   call WaitForAssert({-> assert_match('[$#] $', term_getline(buf, '.'))})
@@ -65,6 +68,8 @@ func Test_suspend_autocmd()
   CheckFeature terminal
   CheckExecutable /bin/sh
 
+  call WaitForResponses()
+
   let buf = term_start('/bin/sh', #{term_rows: 6})
   " Wait for shell prompt.
   call WaitForAssert({-> assert_match('[$#] $', term_getline(buf, '.'))})

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1004,
 /**/
     1003,
 /**/