Update DefaultTaskGroup custom icon to use BanIcon

[pnaik1]

https://issues.redhat.com/browse/RHOAIENG-14822

Description

Updated the DefaultTaskGroup to use BanIcon

How Has This Been Tested?

• Run a pipeline with cancelled task
• Check whether the ExclamationTriangleIcon is changed to BanIcon for cancelled task

Test Impact

N/A

Request review criteria:

Self checklist (all need to be checked):

• The developer has manually tested the changes and verified that the changes work
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has added tests or explained why testing cannot be added (unit or cypress tests for related changes)

If you have UI changes:

• Included any necessary screenshots or gifs if it was a UI change.
• Included tags to the UX team if it was a UI/UX change.

After the PR is posted & before it merges:

• The developer has tested their solution on a cluster by using the image produced by the PR to main

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 85.38%. Comparing base (fbeb889) to head (19fd3e1).
Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
...src/concepts/topology/PipelineDefaultTaskGroup.tsx	0.00%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3489   +/-   ##
=======================================
  Coverage   85.37%   85.38%           
=======================================
  Files        1352     1352           
  Lines       30869    30951   +82     
  Branches     8616     8650   +34     
=======================================
+ Hits        26353    26426   +73     
- Misses       4516     4525    +9     

Files with missing lines	Coverage Δ
...src/concepts/topology/PipelineDefaultTaskGroup.tsx	17.94% <0.00%> (-2.06%)	⬇️

... and 13 files with indirect coverage changes

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[Gkrumbach07]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Gkrumbach07

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• frontend/OWNERS [Gkrumbach07]

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