Add tests for OMIS order activity

[cgsunkel]

Description of change

We don't currently have much testing around the OMIS order activities so I've added some. A very minor change was made to the overview summary to better replicate what the previous component was doing.

I've also removed some dead code from the ActivityFeed folder as part of the last commit.

Checklist

• Has the branch been rebased to main?
• Automated tests (Any of the following when applicable: Unit, Functional or End-to-End)
• Manual compatibility testing (Browsers: Chrome, Firefox, Edge, Safari)

[cypress]

data-hub-frontend    Run #58004

Run Properties:   Passed #58004  •  44a0c9ce62: Remove legacy OMIS activity code and other dead AS code

Project	data-hub-frontend
Branch Review	chore/add-tests-for-omis-activity
Run status	Passed #58004
Run duration	01m 38s
Commit	44a0c9ce62: Remove legacy OMIS activity code and other dead AS code
Committer	Christopher
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	15
View all changes introduced in this branch ↗︎

[codecov]

Codecov Report

Attention: Patch coverage is 93.75000% with 1 line in your changes missing coverage. Please review.

Project coverage is 88.47%. Comparing base (2bd44ca) to head (44a0c9c).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
...yOverview/TableCards/ActivityCards/transformers.js	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7397      +/-   ##
==========================================
+ Coverage   87.98%   88.47%   +0.49%     
==========================================
  Files        1167     1159       -8     
  Lines       18140    18053      -87     
  Branches     5137     5125      -12     
==========================================
+ Hits        15961    15973      +12     
+ Misses       2179     2080      -99     

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[cgsunkel]

Codecov Report

Attention: Patch coverage is 93.75000% with 1 line in your changes missing coverage. Please review.

Project coverage is 88.47%. Comparing base (2bd44ca) to head (44a0c9c).

Files with missing lines Patch % Lines
...yOverview/TableCards/ActivityCards/transformers.js 88.88% 1 Missing ⚠️
Additional details and impacted files

☔ View full report in Codecov by Sentry. 📢 Have feedback on the report? Share it here.

The missing line is covered in a component test