Refactored storage of CISA rep info to NOT use Contacts model

src/registrar/forms/domain_request_wizard.py

@@ -647,47 +647,20 @@ class NoOtherContactsForm(BaseDeletableRegistrarForm):
 
 
 class CisaRepresentativeForm(BaseDeletableRegistrarForm):
-    JOIN = "cisa_representative"
-
-    def to_database(self, obj):
-        if not self.is_valid():
-            return
-        contact = getattr(obj, "cisa_representative", None)
-        if contact is not None and not contact.has_more_than_one_join("cisa_representative_domain_requests"):
-            if self.form_data_marked_for_deletion:
-                # remove the CISA contact from this domain request
-                obj.cisa_representative = None
-                # QUESTION - should we also delete the contact object if it is not joined to other entities?
-            else:
-                # update existing contact if it is not joined to other enttities
-                super().to_database(contact)
-        else:
-            # no contact exists OR contact exists which is joined also to other entities;
-            # in either case, create a new contact and update it
-            contact = Contact()
-            super().to_database(contact)
-            obj.cisa_representative = contact
-            obj.save()
-
-    @classmethod
-    def from_database(cls, obj):
-        contact = getattr(obj, "cisa_representative", None)
-        return super().from_database(contact)
-
-    first_name = forms.CharField(
+    cisa_representative_first_name = forms.CharField(
         label="First name / given name",
         error_messages={"required": "Enter your first name / given name."},
     )
-    last_name = forms.CharField(
+    cisa_representative_last_name = forms.CharField(
         label="Last name / family name",
         error_messages={"required": "Enter your last name / family name."},
     )
-    email = forms.EmailField(
-        label="Email",
+    cisa_representative_email = forms.EmailField(
+        label="Your representative’s email (optional)",
         max_length=None,
         required=False,
         error_messages={
-            "invalid": ("Enter your email address in the required format, like name@example.com."),
+            "invalid": ("Enter your representative’s email address in the required format, like name@example.com."),
         },
         validators=[
             MaxLengthValidator(
@@ -698,6 +671,7 @@ class CisaRepresentativeForm(BaseDeletableRegistrarForm):
     )
 
 
+
 class CisaRepresentativeYesNoForm(BaseYesNoForm):
     """Yes/no toggle for the CISA regions question on additional details"""