some fixes to unit tests; accounting for submission date in django admin and on submission of application

src/registrar/models/domain_information.py

@@ -229,6 +229,7 @@ class DomainInformation(TimeStampedModel):
         da_dict.pop("alternative_domains", None)
         da_dict.pop("requested_domain", None)
         da_dict.pop("approved_domain", None)
+        da_dict.pop("submission_date", None)
         other_contacts = da_dict.pop("other_contacts", [])
         domain_info = cls(**da_dict)
         domain_info.domain_application = domain_application

src/registrar/tests/test_admin.py

@@ -623,6 +623,7 @@ class TestDomainApplicationAdmin(MockEppLib):
             "no_other_contacts_rationale",
             "anything_else",
             "is_policy_acknowledged",
+            "submission_date",
             "current_websites",
             "other_contacts",
             "alternative_domains",

src/registrar/tests/test_views.py

@@ -100,7 +100,7 @@ class LoggedInTests(TestWithUser):
         response = self.client.get("/")
         # count = 2 because it is also in screenreader content
         self.assertContains(response, "igorville.gov", count=2)
-        self.assertContains(response, "DNS needed")
+        self.assertContains(response, "Expired")
         # clean up
         role.delete()