Issue #3281218 by fjgarlin: Restrict the plugin's ability to control which filters are available

...evel/src/Plugin/ProjectBrowserSource/RandomDataPlugin.php

src/Controller/BrowserController.php

src/Controller/ProjectBrowserEndpointController.php

src/Plugin/ProjectBrowserSource/MockDrupalDotOrg.php

src/Plugin/ProjectBrowserSourceBase.php

src/Plugin/ProjectBrowserSourceInterface.php

src/ProjectBrowser/Project.php

src/ProjectBrowser/ProjectInterface.php

sveltejs/public/build/bundle.css

sveltejs/public/build/bundle.js

sveltejs/public/build/bundle.js.map

sveltejs/src/FilterApplied.svelte

sveltejs/src/FilterGroup.svelte

sveltejs/src/Project/MaintainedIcon.svelte

sveltejs/src/Project/Project.svelte

sveltejs/src/Project/SecurityCoverage.svelte

sveltejs/src/ProjectBrowser.svelte

sveltejs/src/Search.svelte

sveltejs/src/constants.js

sveltejs/src/stores.js