fix: has one field show only main panel

[adrianthedev]

Description

Fixes #1110

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

Manual review steps

1. Go to a team page
2. ensure the admin is attached
3. see that the admin has only the main panel displayed and no other tabs

Manual reviewer: please leave a comment with output from the test if that's the case.

[codeclimate]

Code Climate has analyzed commit e07cfa4 and detected 0 issues on this pull request.

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[codecov]

Codecov Report

Merging #1111 (e07cfa4) into main (52b0568) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1111      +/-   ##
==========================================
- Coverage   94.18%   94.16%   -0.02%     
==========================================
  Files         523      523              
  Lines       10388    10388              
==========================================
- Hits         9784     9782       -2     
- Misses        604      606       +2     

Impacted Files	Coverage Δ
lib/avo/fields/has_base_field.rb	91.83% <0.00%> (-2.05%)	⬇️
lib/avo/fields/base_field.rb	95.45% <0.00%> (-0.65%)	⬇️
spec/system/avo/default_field_spec.rb	95.12% <0.00%> (ø)

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[github-actions]

This PR has been merged into main. The functionality will be available in the next release.

Please check the release guide for more information.