Verbraucher: Bugfixes verknüpfte Zähler

[LKuemmel]

Bugfixes for #4011

[Copilot]

🟡 Changes recommended

Linked-meter filtering can prevent recovery of a missing grid-meter root.

2 open findings

• Preserve EVU root creation before suppressing linked counters · New
• Reuse retained topic map instead of fetching it twice · New

What changed in this PR

Fixes consumer-linked meter handling following #4011, keeping linked meters outside the hierarchy while accounting for their IDs.

Changes:

• Derives the maximum hierarchy ID from broker topics.
• Prevents linked consumer meters from being re-added during hierarchy validation.
• Adds regression tests for both behaviors.

File	Description
packages/​helpermodules/​command.py	Calculates hierarchy IDs from component topics.
packages/​helpermodules/​command_test.py	Tests topic-based ID calculation and updates mocks.
packages/​control/​counter_all/​hierarchy.py	Skips linked meters when restoring missing entries.
packages/​control/​counter_all/​hierarchy_test.py	Tests that linked meters remain absent.

🧠 Review effort: Balanced

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[Copilot]

🟡 Changes recommended

Fix the incorrect test argument and rename the misleading regression test.

1 open finding

• Pass topic mapping before default max ID argument · New

2 resolved since last review

• Reuse retained topic map instead of fetching it twice
• Preserve EVU root creation before suppressing linked counters

Previously missed (1)

In code that hasn't changed since last review

Rename test to reflect counter is not re-added

packages/​control/​counter_all/​hierarchy_test.py:407

The test name says the linked counter is re-added, but the assertion intentionally verifies that counter 6 is not added back to the hierarchy. This opposite wording makes the regression test misleading; rename it to describe the non-re-add behavior.

🧠 Review effort: Lite

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