fix: visibility of custom form field and info text color

[ruhci28]

Fixes #4607

Short description of what this resolves:

custom form field is visible even when the attendee form is turn off . Text under Information about attendee form is very light.

Changes proposed in this pull request:

-Make the Custom form field visible only when the attendee form is turn on .
-change the color of the text under Information about attendee form to make it more readable and visible.

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• [ x
  
  

I have added necessary documentation (if appropriate)

[vercel]

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[iamareebjamal]

Why add one more if and nor just move it inside the if above?

[ruhci28]

ok

[iamareebjamal]

Also, please change the PR title to something proper

[ruhci28]

Also, please change the PR title to something proper

Yeah sure.

[codecov]

Codecov Report

Merging #4645 into development will increase coverage by 0.18%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #4645      +/-   ##
===============================================
+ Coverage        22.90%   23.08%   +0.18%     
===============================================
  Files              472      475       +3     
  Lines             4978     4952      -26     
  Branches             8        8              
===============================================
+ Hits              1140     1143       +3     
+ Misses            3837     3808      -29     
  Partials             1        1              

Impacted Files	Coverage Δ
...omponents/forms/admin/content/social-links-form.js	0.00% <ø> (ø)
app/routes/create.js	100.00% <ø> (ø)
app/router.js	100.00% <0.00%> (ø)
app/routes/admin/sessions.js	0.00% <0.00%> (ø)
app/routes/admin/sessions/list.js	0.00% <0.00%> (ø)
app/controllers/admin/events/list.js	0.00% <0.00%> (ø)
app/controllers/events/view/sessions.js	0.00% <0.00%> (ø)
app/controllers/events/view/sessions/list.js	0.00% <0.00%> (ø)
app/controllers/admin/users/view/events/list.js	0.00% <0.00%> (ø)
app/controllers/my-sessions/view.js
... and 8 more

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[ruhci28]

Thanks @iamareebjamal 🙂