Fix pb in tck tests for internal connections.

[FranckLecuyer]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• 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?

Bug fix

What is the current behavior?

Test method testTraversalInternalConnections fails in NodeBreakerInternalConnectionsTest class with network-store implementation.
see PR in network-store-client : powsybl/powsybl-network-store#426

What is the new behavior (if this is a feature change)?
Test method testTraversalInternalConnections now succeeds

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

• Yes
• No

If yes, please check if the following requirements are fulfilled

• The Breaking Change or Deprecated label has been added
• The migration steps are described in the following section

What changes might users need to make in their application due to this PR? (migration steps)

Other information:

[FranckLecuyer]

Waiting for next powsybl-network-store release for this PR to be merged ...

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud