Pedestal:  Bump max TE length to 32000

MacRelix's TextEdit-based console has its own byte limit of 30000, after
which it will delete the first half (minus a trailing fragmentary line).
When the console's text buffer contains exactly 30000 bytes, the halving
hasn't occurred yet and won't until a write occurs -- usually, the shell
prompt following a command.  But entering a command isn't possible since
even an empty command includes a newline, which can't be entered because
Pedestal's TextEdit limit has been reached.  At this point, the user has
to manually truncate the console's 'text' object from another process or
just give up and close the window.

Avoid this by raising Pedestal's limit.  MacRelix will still cut console
text after 30000, but now the user has an additional 2000 bytes to enter
a command, which should be more than plenty.  (If pasting a huge command
fails due to this, try `clear` first.)