Fix Patterns.UCS_CHAR character class

Wrap Patterns.UCS_CHAR character class with brackets. Previously CL
Ie6df818dc4d33dfee6ee54432a2231cca51ec423 broke autoLink email and URL
patterns while excluding the empty spaces.

Bug: 28020781
Change-Id: Ieb7d09cb5e544c1e7cbc1a4d665b979c65e7e773
1 file changed