bug: fix CPU 'all' label missing on small sizes

[ClementTsang]

Description

A description of the change, what it does, and why it was made. If relevant (such as any change that modifies the UI), please provide screenshots of the changes:

Fixes the "All" label being missing on small windows. This was a regression due to #918. We work around it by moving the width skip check into the implementors.

Before vs after:

Issue

If applicable, what issue does this address?

Closes: #956

Testing

If relevant, please state how this was tested. All changes must be tested to work:

If this is a code change, please also indicate which platforms were tested:

• Windows
• macOS
• Linux

Checklist

If relevant, ensure the following have been met:

• Areas your change affects have been linted using rustfmt (cargo fmt)
• The change has been tested and doesn't appear to cause any unintended breakage
• Documentation has been added/updated if needed (README.md, help menu, doc pages, etc.)
• The pull request passes the provided CI pipeline
• There are no merge conflicts
• If relevant, new tests were added (don't worry too much about coverage)

[codecov-commenter]

Codecov Report

Base: 20.72% // Head: 20.69% // Decreases project coverage by -0.02% ⚠️

Coverage data is based on head (74d216d) compared to base (7c53f08).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #953      +/-   ##
==========================================
- Coverage   20.72%   20.69%   -0.03%     
==========================================
  Files          75       75              
  Lines       14627    14643      +16     
==========================================
  Hits         3031     3031              
- Misses      11596    11612      +16     

Impacted Files	Coverage Δ
src/components/data_table/draw.rs	0.00% <0.00%> (ø)
src/widgets/cpu_graph.rs	0.00% <0.00%> (ø)
src/widgets/disk_table.rs	0.00% <0.00%> (ø)
src/widgets/process_table/proc_widget_data.rs	9.52% <0.00%> (-0.20%)	⬇️
src/widgets/process_table/sort_table.rs	0.00% <0.00%> (ø)
src/widgets/temperature_table.rs	0.00% <0.00%> (ø)

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