feat: add refund policy section in other-details step

[snitin315]

Fixes #4957

Requires fossasia/open-event-server#7253

Changes proposed in this pull request:

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[codecov]

Codecov Report

Merging #5029 into development will increase coverage by 0.05%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #5029      +/-   ##
===============================================
+ Coverage        22.69%   22.74%   +0.05%     
===============================================
  Files              485      485              
  Lines             5165     5165              
  Branches            21       21              
===============================================
+ Hits              1172     1175       +3     
+ Misses            3989     3986       -3     
  Partials             4        4              

Impacted Files	Coverage Δ
app/models/event.js	53.84% <ø> (ø)
app/components/tabbed-navigation.js	53.33% <0.00%> (+20.00%)	⬆️

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[mariobehling]

Looks good. Thanks.

We need to think how to display that if the text is longer. Let's consider this later and let's move forward. Cheers!

[mariobehling]

Ok, I missed that the refund box is pre-filled. It should not be pre-filled. Please see details here #5036