Remove obsolete type TargetComponents

[Marenz]

No description provided.

[Copilot]

Pull Request Overview

This PR removes the obsolete local TargetComponents alias and conversion helper from the actor dispatcher, switches to using the upstream TargetComponents type, updates tests accordingly, and cleans up exports and release notes.

• Drop _convert_target_components and local TargetComponents in _actor_dispatcher.py
• Update tests to assert on the new TargetComponents directly
• Remove TargetComponents export in __init__.py and document removal in release notes

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
tests/test_managing_actor.py	Updated assertions to use the new target type and removed old import
src/frequenz/dispatch/_actor_dispatcher.py	Removed conversion helper and alias; import upstream TargetComponents
src/frequenz/dispatch/init.py	Removed legacy TargetComponents from public API exports
RELEASE_NOTES.md	Documented removal of TargetComponents (with typos)

Comments suppressed due to low confidence (2)

tests/test_managing_actor.py:180

• The test references an undefined symbol TargetIds. Did you mean to import TargetComponents or use the correct upstream type? Update the import or assertion to use the proper TargetComponents alias.

    assert event.components == TargetIds(

RELEASE_NOTES.md:9

• There are typos here: disptach should be dispatch and tye should be type.

The `frequenz.disptach.TargetComponents` tye was removed, use `frequenz.client.dispatch.TargetComponents` instead.