Patch for bug in auto mint swap

[KKA11010]

• This PR patches the wrong fee estimation caused by requesting fees from destination mint rather than source mint.
• It also fixes the nav UI on ios and the additional space in the bottom of the contacts screen

Fixes #279

[codecov-commenter]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (70a5f54) 13.47% compared to head (bb61ef3) 13.47%.

Files	Patch %	Lines
src/screens/Payment/Success.tsx	0.00%	4 Missing ⚠️
src/wallet/index.ts	0.00%	4 Missing ⚠️
src/screens/Payment/Processing.tsx	0.00%	3 Missing ⚠️
src/components/nav/BottomNav.tsx	0.00%	1 Missing ⚠️
src/screens/Addressbook/index.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #278      +/-   ##
==========================================
- Coverage   13.47%   13.47%   -0.01%     
==========================================
  Files         162      162              
  Lines        5891     5893       +2     
  Branches     1620     1622       +2     
==========================================
  Hits          794      794              
- Misses       4952     4954       +2     
  Partials      145      145              

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