Deleted and replaced configuration entity "core.entity_form_mode.node.edit_instance"

Problem/Motivation

The edit_instance form mode is automatically created, including on import, causes an error if it already exists.

Steps to reproduce

Import full configuration, for example site-install --existing-config.

Proposed resolution

The hook_config_insert it is using isn't one that knows if it is configuration being imported - unlike the install installed. Should at least check for existing config if it isn't already.

Remaining tasks

User interface changes

API changes

Data model changes