Improve handling of EOL characters in selection

[ppo]

Selecting the 2 first lines (whole line including the \n EOL).
I'm doing this as follows: cursor at the beginning, holding shift then 2 times arrow down => cursor on the third line.

b
a

c

Expected result:

a
b

c

With "sortLines.filterBlankLines": false

a
b
c

With "sortLines.filterBlankLines": true

a
b
c