Description of problem:
During verification of BZ#1944710 I tried to change lifecycle environment of a host through bulk actions on the Content Hosts page. The first issue is that we are still able to assign a LCE not present on the content source (like external capsule), the second issue is that it fails with

undefined method `content_view=' for #<Katello::Host::ContentFacet:0x00007f77416c1528>

Version-Release number of selected component (if applicable):
6.14.0 snap 4

How reproducible:
always

Steps to Reproduce:
1. Register a host through external capsule where only some LCEs are synced.
2. Go to Content Hosts -> select host -> Select Action -> Change Lifecycle Environment
3. In the "Content Host Bulk Content" modal select a LCE, CV, click Assign, confirm Yes

Actual results:
Fails with 'undefined method' error

Expected results:
1. no 'undefined methor' error
2. I shouldn't be able to pick LCE not present on the content source, or at least I should get meaningful error message