image/tree: Hide Content size column without containerd store

[vvoland]

trafficstars

• stacked on: https://github.com/docker/cli/pull/5744

With graph drivers, all content sizes are zero because the compressed content isn't stored. This makes the whole column useless and wasting the terminal space.

Hide the whole column if all its values would be zero.

Before

After

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 16 lines in your changes missing coverage. Please review.

Project coverage is 59.17%. Comparing base (5b90e0e) to head (203ce87).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5771      +/-   ##
==========================================
- Coverage   59.20%   59.17%   -0.04%     
==========================================
  Files         353      353              
  Lines       29522    29538      +16     
==========================================
  Hits        17478    17478              
- Misses      11072    11088      +16     
  Partials      972      972              

[Benehiko]

@vvoland did you want this merged soon?