DXCDT-405: Fix incorrect number rendered in header for auth0 apps list

[willvedd]

🔧 Changes

When running auth0 apps list, the number of apps listed in the header is one higher than the actual number of apps rendered in the output. This is because the global client (mostly deprecated) is included in the header number but is filtered by the output. The fix here is to use the length of the filtered applications to determine the header number instead of the raw number of clients which likely include the deprecated global client.

🔬 Testing

Primarily manual but mostly covered by existing integration tests.

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

Patch coverage: 54.54% and no project coverage change.

Comparison is base (e10608c) 50.45% compared to head (e3b4f26) 50.45%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #674   +/-   ##
=======================================
  Coverage   50.45%   50.45%           
=======================================
  Files          93       93           
  Lines       11764    11764           
=======================================
  Hits         5936     5936           
  Misses       5400     5400           
  Partials      428      428           

Impacted Files	Coverage Δ
internal/display/apps.go	76.82% <54.54%> (ø)

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