[Task] Add unit test cases for PluginCard component

[tjtanjin]

Task Description:
Currently, we run unit tests using jest and co-locate the test files with the source files as can be seen here.

However, the test cases are not yet comprehensive enough and work can be done to cover more grounds. Specifically for this issue, we hope to add test cases for the PluginCard component.

Deliverable(s):
New unit test cases that cover the testing of the PluginCard component.

Additional Context:

• The PluginCard component can be found here
• An example for SearchBar can be found here which may serve as a good source for reference

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[VetteIT]

@tjtanjin please assign me to this issue.

[tjtanjin]

Hey @VetteIT, appreciate the enthusiasm but you have 4 issues assigned at the moment 🥹

Let's keep the door open for other first-time contributors who may wish to take up the opportunity. Should this issue remain unassigned for an extended period of time, I'd be more than happy to assign it to you. Seek your understanding!