Calling $migration->getMigrationDependencies() from a field plugin results in an infinate loop

Problem/Motivation

Calling $migration->getMigrationDependencies() from a field plugin results in an infinite loop. This is because that method calls ::expandPluginIds, which in turn calls ::getDefinitions which in turn calls the node deriver, which in turn calls ::getDerivativeDefinitions calls the field plugin manager, which loops ad nauseam.

Steps to reproduce

See problem statement above.

Proposed resolution

Reverse course on always expanding plugin IDs. If someone needs it, they should have to consciously call for it.

Remaining tasks

User interface changes

Introduced terminology

API changes

Data model changes

Release notes snippet