scriptability: Avoid truncating columns of tables/lists on non-TTYs

[profclems]

This is a hot fix to solve where glab still truncates lines with length longer that the specified column width on non-TTYs to improve scriptability

Resolves #706

[codecov]

Codecov Report

Merging #713 (0272873) into trunk (b3df43d) will increase coverage by 0.03%.
The diff coverage is 87.87%.

@@            Coverage Diff             @@
##            trunk     #713      +/-   ##
==========================================
+ Coverage   59.50%   59.54%   +0.03%     
==========================================
  Files          90       90              
  Lines        6522     6535      +13     
==========================================
+ Hits         3881     3891      +10     
- Misses       2269     2272       +3     
  Partials      372      372              

Impacted Files	Coverage Δ
pkg/tableprinter/table_printer.go	78.44% <85.18%> (-0.60%)	⬇️
cmd/glab/main.go	40.00% <100.00%> (+0.67%)	⬆️
commands/issue/list/issue_list.go	66.40% <100.00%> (-0.27%)	⬇️
commands/mr/list/mr_list.go	62.22% <100.00%> (ø)
commands/mr/mrutils/mrutils.go	66.01% <100.00%> (+0.45%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b3df43d...0272873. Read the comment docs.