Allow use the existing text_default field formatter as the for typed resource object fields

Problem/Motivation

There are currently no formatter options for the Typed Resource Object fields. Whilst they still will be displayed as text fields if enabled for display, the dropdown on the Manage Display form for entity

It's also possible this is leading to the value being displayed sometimes when this is explicitly disallowed by the Manage Display configuration, though I have yet to explicitly prove this.

Proposed resolution

Implement hook_field_formatter_info_alter() to allow the field formatter with ID text_default to be used for fields of type typed_resource_object

Remaining tasks

None

User interface changes

Manage Display now shows Default in field formatter for this field type rather than an empty entry.

API changes

None.

Data model changes

None

Release notes snippet