Adding unit tests for PowerSummaryTable.js

[shivaahir158]

Motivate of the pull request

• To address an existing issue. If so, please provide a link to the issue:
• Breaking new feature. If so, please describe details in the description part.

Describe the technical details -

Renders the PowerSummaryTable component with an empty data array, total set to 0, and percent set to 0.
Asserts that the title ("Power Summary") is displayed.

Which part of the code base require a change

• Frontend: PowerSummaryTable.test.js
• Backend:
• Library: <Specify the library name, e.g. npm packages>
• Plug-in: <Specify the plugin name, e.g. Webpack, jtest>
• Documentation
• Regression tests
• Continuous Integration (CI) scripts

Impact of the pull request

• Require a change on Quality of Results (QoR)
• Break backward-compatibility. If so, please list who may be influenced.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.83%. Comparing base (b2b7ceb) to head (fae7297).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #257   +/-   ##
=======================================
  Coverage   68.83%   68.83%           
=======================================
  Files         110      110           
  Lines        9022     9022           
  Branches      402      402           
=======================================
  Hits         6210     6210           
  Misses       2812     2812           

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