Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1915943

Description of problem:
The Puppet Environments are not listed properly in Smart Class Parameters details page, based on the selected Organization taxonomy.

Version-Release number of selected component (if applicable):
6.8.2, 6.9.0

How reproducible:
always

Steps to Reproduce:
1. Have a Satellite with two or more organizations and two or more puppet environments containing a class with parameters
2. Go to Configure > Classes > select some class with params > tab "Smart Class Parameter"
3. See the Puppet Environments field and try to change the Organization scope

Actual results:
environments are not listed properly, for example:
", common, and production"
"KT_abc_Library_def_1, common, and"
", , and KT_abc_Library_def_1"

Expected results:
better phrasing

Additional info:
see the attached screenshots