Use `uuid` property for component ids

Some plugins currently has code for generating layout component ids. This code should be removed and all components should use the `self.uuid` property provided by the parent plugin metaclass.

Locate the plugins that generate layout component IDs and inspect the parent plugin metaclass that provides self.uuid. Remove the plugin-level ID generation and verify that every component uses self.uuid instead; the issue provides no specific files or tests, so confirm the affected plugin set before starting.

Written by the indexing model from the issue text.