When a single entry is truncated on the front page, provide a "View more" button

For a single entry there is no "more option" page.

However, the texts on that entry may be truncated to fit into the one-line requirement for the Credential Selector front page. Therefore, if that happens, render a "view more" that leads to the more option page with the same entry, but fully expanded in text.

Bug: 277272017
Test: manual (see bug for recording)
Change-Id: If5d88453c7d1905a72c7beaebbc2ece8ce212d02