IIDM. RemoveFeederBay. Unitary test to check that in busBreakerModels linked switches are not removed when a component is removed

[marqueslanauja]

Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines
• [x] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

Does this PR already have an issue describing the problem?

What kind of change does this PR introduce?

Adds a test to check that in busBreaker models linked switches are not removed when a component is removed.

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Does this PR introduce a breaking change or deprecate an API?

• [ ] Yes
• [ ] No

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