Issue 3462246: Add back the alt text of media component.

Closes #3462246

web/profiles/provus/config/install/core.entity_form_display.block_content.provus_media.default.yml

@@ -4,6 +4,7 @@ status: true
 dependencies:
   config:
     - block_content.type.provus_media
+    - field.field.block_content.provus_media.field_provus_alt_text
     - field.field.block_content.provus_media.field_provus_media
     - field.field.block_content.provus_media.field_provus_media_style
   module:
@@ -15,6 +16,14 @@ targetEntityType: block_content
 bundle: provus_media
 mode: default
 content:
+  field_provus_alt_text:
+    type: string_textfield
+    weight: 27
+    region: content
+    settings:
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
   field_provus_media:
     type: media_library_widget
     weight: 26