Fix Language::parseFormattedNumber for lzh and zh-classical

When parsing, filter any array values that are empty string
before using strtr php function so that strtr can handle
the array.

Bug: 64347
Change-Id: I94761caa70d44febfa0999c91048a01044fc1fbe
Merge "Fix Language::parseFormattedNumber for lzh and zh-classical"