Replace webflo/drupal-core-require-dev and drupal-composer/drupal-scaffold...

Replace webflo/drupal-core-require-dev and drupal-composer/drupal-scaffold with drupal/core-dev and drupal/core-composer-scaffold.

Closes #3380259

config/install/embed.button.media_browser.yml

-langcode: en
-status: true
-dependencies:
-  module:
-    - entity_embed
-    - media
-label: 'Media browser'
-id: media_browser
-type_id: entity
-type_settings:
-  entity_type: media
-  bundles: {  }
-  display_plugins:
-    - 'entity_reference:entity_reference_entity_view'
-    - media_image
-  entity_browser: ckeditor_media_browser
-  entity_browser_settings:
-    display_review: false
-icon_uuid: null