CIF-2119: Add storefront events to checkout components

[laurentiumagureanu]

Description

• Added new Magento Storefront events to related checkout components.
• Updated and added unit tests.

Related Issue

CIF-2119

Motivation and Context

Required by the product recommendations engine

How Has This Been Tested?

Unit tests

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes and the overall coverage did not decrease.
• All unit tests pass on CircleCi.
• I ran all tests locally and they pass.

[codecov]

Codecov Report

Merging #589 (5c0ab1c) into issue/CIF-2107 (096346f) will increase coverage by 0.26%.
The diff coverage is 96.96%.

@@                 Coverage Diff                  @@
##             issue/CIF-2107     #589      +/-   ##
====================================================
+ Coverage             87.44%   87.71%   +0.26%     
  Complexity             1363     1363              
====================================================
  Files                   249      249              
  Lines                  6357     6374      +17     
  Branches                943      951       +8     
====================================================
+ Hits                   5559     5591      +32     
+ Misses                  603      588      -15     
  Partials                195      195              

Flag	Coverage Δ
integration	64.29% <ø> (ø)
jest	84.75% <96.96%> (+0.79%)	⬆️
karma	94.82% <ø> (ø)
unittests	87.09% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...act-components/src/components/Checkout/overview.js	9.52% <0.00%> (+1.83%)	⬆️
react-components/src/context/UserContext.js	90.40% <ø> (ø)
react-components/src/utils/hooks.js	96.55% <ø> (ø)
react-components/src/utils/test-utils.js	68.42% <ø> (ø)
...eact-components/src/components/Checkout/useCart.js	100.00% <100.00%> (ø)
...-components/src/components/Checkout/useOverview.js	92.50% <100.00%> (+30.43%)	⬆️
...nts/src/utils/mocks/mockMagentoStorefrontEvents.js	100.00% <100.00%> (ø)
...ponents/src/components/Checkout/checkoutContext.js	61.90% <0.00%> (+4.76%)	⬆️

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[herzog31]

IMO it makes sense to check for the value the setOrder method was called with here.