fix: update CRD - simplify comment and use listType set

- Simplify PhoneLookupExcludedCountries description
- Change x-kubernetes-list-type from atomic to set

Co-authored-by: Cursor <cursoragent@cursor.com>
Signed-off-by: Feny Mehta <fbm3307@gmail.com>

Author: fbm3307

config/crd/bases/toolchain.dev.openshift.com_toolchainconfigs.yaml

@@ -359,12 +359,11 @@ spec:
                           phoneLookupExcludedCountries:
                             description: |-
                               PhoneLookupExcludedCountries is a list of ISO 3166-1 alpha-2 country codes (e.g. ["CA", "US"])
-                              for which Twilio Lookup should be skipped. Twilio Lookup data quality is insufficient
-                              for these regions. Canada also has CLNPC regulatory restrictions.
+                              for which Twilio Lookup should be skipped.
                             items:
                               type: string
                             type: array
-                            x-kubernetes-list-type: atomic
+                            x-kubernetes-list-type: set
                           phoneLookupMode:
                             default: log
                             description: |-