Readjust the available size for the recommendations in 2-pane sheet

Now that we exclude the space taken by size string and description,
offsetting the size provided to the recommendation table to keep the
widgets within non-scrollable view as much possible.

Bug: N/A
Test: Screenshot
Flag: N/A

Change-Id: I0193cd1ba5de0b0ff98dab9aeb352264afd3ff3a