fix(send-flow-snap): add missing displayAvatar props, add tests, update snaps-simulation

[hmalik88]

The send-flow example snap is only passing the displayAvatar prop in the to scenario but not in the others. This can land you in a situation where you paste a valid address in the to field, start to type an amount in the amount field, then the avatar disappears because no displayAvatar prop is being passed.

Summary of changes

• Updated the send flow snap's onUserInput code to properly pass the displayAvatar prop in all scenarios.
• Added tests for the snap.
• Added an SVG transformer so jest can handle the icons that are imported in the snap.
• Updated the structure of the SVGs so it's consistent with what jest expects.
• Updated typeInField in snaps-simulation so that it properly attaches the chainId to the input value.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.80%. Comparing base (41f8c21) to head (5a6a3ce).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3312   +/-   ##
=======================================
  Coverage   97.79%   97.80%           
=======================================
  Files         363      364    +1     
  Lines        9893     9911   +18     
  Branches     1613     1616    +3     
=======================================
+ Hits         9675     9693   +18     
  Misses        218      218           

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[hmalik88]

Updated the formatting for this SVG (and the ones below) to a consistent flat format since jest flattens it and the SVG transformer picks up the file content with format.

[hmalik88]

Needed to write a transformer for jest to be able to handle SVGs.

addressed