[MTRHO] Import application page shows namespace value as undefined when navigated through all project mode.

Description of problem:   Login to the openshift console, click on the project navigation button and select all projects. Navigate to the app imports page the namespace value is getting as undefined.

Console URL:
https://console-openshift-console.apps.cam-tgt-43780.qe.gcp.devcluster.openshift.com/app-imports/ns/undefined/test

https://console-openshift-console.apps.cam-tgt-43780.qe.gcp.devcluster.openshift.com/app-imports/ns/undefined/test

Version-Release number of selected component (if applicable):

Source GCP 4.6

Target GCP 4.11

How reproducible: 

Always

Steps to Reproduce:

1. Login to the console, click on the project navigation button and select all projects.
2. Navigate to the import app page.

Actual results:

 Import wizard is treating namespace value as undefined.

Expected results: 

Refuse to show the app import page if no namespace is selected

Additional info: