[ACA-3201] Fix datatable styling non-sortable with sortable columns are not a…

[arditdomi]

…ligned

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (check one with "x")

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation
• Other... Please describe:

What is the current behaviour? (You can also link to an open issue here)
https://issues.alfresco.com/jira/browse/ACA-3201

What is the new behaviour?
Hardcoded padding value for sortable columns is removed

Does this PR introduce a breaking change? (check one with "x")

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...

Other information:

[codecov-commenter]

Codecov Report

Merging #5771 into develop will increase coverage by 0.01%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #5771      +/-   ##
===========================================
+ Coverage    83.83%   83.84%   +0.01%     
===========================================
  Files          955      955              
  Lines        27021    27021              
  Branches      3802     3802              
===========================================
+ Hits         22653    22656       +3     
+ Misses        3242     3239       -3     
  Partials      1126     1126              

Impacted Files	Coverage Δ
.../lib/task-list/components/attach-form.component.ts	57.14% <0.00%> (+5.35%)	⬆️

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