feat(custom report): Use radio buttons for sort selection in dropdown

[leSamo]

https://issues.redhat.com/browse/RHINENG-12947

I was able to repurpose the existing RadioCustomFilter component which is already used for filters inside the same modal allowing me to remove the redundant SelectCustomSorter component.

Before

After

To test

1. Navigate to Reports page
2. Open custom report modal with Create report button
3. Try to export PDF with the default selected sort
4. Export PDF and check if CVEs are sorted properly (CVSS high to low)
5. Open modal again and change the sorting
6. Export PDF and check if CVEs are sorted properly

[jira-linking]

Commits missing Jira IDs:
bce14d7

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.13%. Comparing base (0c9ebdf) to head (bce14d7).
Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2146      +/-   ##
==========================================
- Coverage   67.15%   67.13%   -0.02%     
==========================================
  Files         128      127       -1     
  Lines        3440     3426      -14     
  Branches     1067     1069       +2     
==========================================
- Hits         2310     2300      -10     
+ Misses       1130     1126       -4     

Flag	Coverage Δ
	67.13% <100.00%> (-0.02%)	⬇️

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[johnsonm325]

@leSamo see updated comment in the Jira card. I apologize for the lack of clarity.