Mms: Dispaly wrong text message limit for per conversation

The default value of number picker larger than the max value.

Change the default value of number picker from 10000 to 1000.

CRs-Fixed: 654577

Change-Id: I0a480d14366c98b4bf3afaa497c14d3922423915
(cherry picked from commit 7d22cfd3f0bb9fc8ef6723ba74d4e17e34c1895a)