Update contentDescription to announce 'than' rather than '>'

Root Cause: Talkback announce '>' (greater than), which is not user expected.

Solution: Update contentDescription with string contain 'than'

Bug: 378804585
Test: Enable screen reader to check
Flag: EXEMPT bugfix
Change-Id: Ibc7a2f7c7d1100dd25ddf29c2fffb22ac5ad52c6