tabs should default to not load eagerly

[davetsay]

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[scottbell]

To test:

1. Create a tabs object. The resultant form should have the eager tabs toggle switched off:

   

2. Change the index.html to install the plugin using the option to enable eager loading to default to true:

   openmct.install(openmct.plugins.Tabs({ eagerLoad: true }));

3. Create a tabs object. The resultant form should have the eager tabs toggle switched on:

   

4. Generally test tab eager loading by creating two SWGs to drop onto the tabs object. When eager loading is turned on, on page load, both tabs object should have their component HTML loaded:

   

When eager loading is turned off, only the selected tab on page load should have its component HTML loaded:

5. Repeat with real telemetry

[ozyx]

Verified Testathon 2/5/24