In messages, data limit is inconsistent

Description

Steps to reproduce

1. Create a Twitter channel.
2. Create a message that is sent to the channel.
3. Enter data to Page link --> data limit is 119 characters in the Twitter warning.
4. Enter data to Image.
5. Click the Send Now button.

Expected: Data limit should be the same.
Actual: Data limit in the message popup is different from the message warning.