TreeMasterDetail: Detail is shared between TMD instances

[sdirix]

Describe the bug
When there are multiple TMDs in one app, the detail is shared between them.

To Reproduce

1. Run the examples with the Angular-Material renderer set
2. Open example List with detail
3. Open example List with detail (Registered). You will see the detail of List with detail although it has nothing to do with this example.
4. Click on some entries in the tree and switch back to List with detail. Now here the other detail is shown.

Expected behavior
The TMD instances should not interfere with each other.

Browser:

• Browser [Chrome]
• Version [71.0.3578.98]

Used Setup:

• Framework: [angular]
• RendererSet: [angular-material]