Warning on profile install due to aggrid requirement variables

Problem/Motivation

A warning banner is being displayed on profile install with aggrid. The source is the fact that variables are being assigned before an if statement.

Proposed resolution

Move the variables below inside of the aggrid.install if area.

// Verify the library is installed.
$aggrid_library_community = \Drupal::service('library.discovery')->getLibraryByName('aggrid', 'ag-grid-community');
$install_path_community = $aggrid_library_community['js'][0]['data'];
$aggrid_library_enterprise = \Drupal::service('library.discovery')->getLibraryByName('aggrid', 'ag-grid-enterprise');
$install_path_enterprise = $aggrid_library_enterprise['js'][0]['data'];