Bug 960800 - [B2G][SMS][RTSP] RTSP link doesn't appear as hyperlink when SMS is received

- add hyperlink support to rtsp protocol

cherry-picked from f7f71723f11ef0b69c883f3ab503283293a3108e
Merge pull request #24819 from luke-chang/960800_v2.0m_sms_rtsp_link_support

Bug 960800 - [B2G][SMS][RTSP] RTSP link doesn't appear as hyperlink when SMS is received