Drop `properties` validation in `TenantDescriptor#equals`

[smcvb]

During a clean-up of this repository I (yes, me) accidentally introduces the propeties to the TenantDescriptor#equals method. This was, as it turns out, wrong.

The TenantDescriptor is both constructed by the extension it self and by users, both not necessarily knowledgable about the properties, but definitely knowledgable about the right tenantId. To have the multi-tenancy extension behave as intended, validating the TenantDescriptor based on just it's tenantId is paramount.

As such, this pull request removes properties from the TenantDescriptor#equals method again. Furthermore, I have added a test case to validate the properties field does not have any influence on the behavior of equals.

[smcvb]

Hash function also needs to drop properties return Objects.hash(tenantId, properties);

return Objects.hash(tenantId);

Sharp, and adjusted!

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

100.0% Coverage
0.0% Duplication