fix: show multisource details for an appset when using argocd appset get command

[nitishfy]

Closes #20902
Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
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Before:

> argocd appset get color-applicationset-multi-source
Name:               argocd/color-applicationset-multi-source
Project:            default
Server:             https://kubernetes.default.svc
Namespace:          {{namespace}}
Sources:
- Repo:             https://github.com/argoproj/argocd-example-apps.git
  Target:           HEAD
  Path:             apps
SyncPolicy:         <none>

CONDITION            STATUS  MESSAGE                                                 LAST TRANSITION
ErrorOccurred        False   Successfully generated parameters for all Applications  2024-11-21 18:54:36 +0530 IST
ParametersGenerated  True    Successfully generated parameters for all Applications  2024-11-21 18:47:40 +0530 IST
ResourcesUpToDate    True    ApplicationSet up to date                               2024-11-21 18:54:36 +0530 IST

After:

> argocd appset get color-applicationset-multi-source
Name:               argocd/color-applicationset-multi-source
Project:            default
Server:             https://kubernetes.default.svc
Namespace:          {{namespace}}
Sources:
- Repo:             https://github.com/argoproj/argocd-example-apps.git
  Target:           HEAD
  Path:             apps
- Repo:             https://github.com/argoproj/argocd-example-apps.git
  Target:           HEAD
  Path:             guestbook
SyncPolicy:         <none>

CONDITION            STATUS  MESSAGE                                                 LAST TRANSITION
ErrorOccurred        False   Successfully generated parameters for all Applications  2024-11-21 18:54:36 +0530 IST
ParametersGenerated  True    Successfully generated parameters for all Applications  2024-11-21 18:47:40 +0530 IST
ResourcesUpToDate    True    ApplicationSet up to date                               2024-11-21 18:54:36 +0530 IST

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[ishitasequeira]

The code changes look good. Can you fix the failing tests?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.02%. Comparing base (9f1431e) to head (11a568a).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #20903   +/-   ##
=======================================
  Coverage   55.02%   55.02%           
=======================================
  Files         324      324           
  Lines       55417    55421    +4     
=======================================
+ Hits        30493    30497    +4     
- Misses      22308    22312    +4     
+ Partials     2616     2612    -4     

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[ishitasequeira]

LGTM!!