[Terra-Icon] Removed Array from Icon Base

[supreethmr]

Summary

svgChildren = new Array(svgA11yLabel).concat(children);

Array used to concat title tag with svg was causing below warnings. these warnings were causing jest test failures on one of consuming project.

js Warning: Each child in a list should have a unique "key" prop. Check the render method of `IconBase`. See https://fb.me/react-warning-keys for more information.

Consuming project has below config which will make jest to fail for console warnings / errors.

console.error = (message, props) => {
  // An error occurred in the console, please fix the error. The error description should be above this message.
  throw (message instanceof Error ? message : new Error(message.replaceAll('%s', props)));
};

Closes UXPLATFORM-8297

Deployment Link

https://terra-core-deployed-pr-#.herokuapp.com/

Testing

no warnings / errors on browser console. verified on project which had jest failures

Additional Details

Thank you for contributing to Terra.
@cerner/terra