Rename Programme#has_multiple_delivery_methods?

This is incorrectly named as it's vaccine methods we want to check
rather than delivery methods. Even for non-flu programmes, there are
multiple delivery methods (intramuscular and subcutaneous).

Author: thomasleese

app/components/app_programme_status_tags_component.rb

@@ -13,7 +13,7 @@ def call
       programme_statuses.map do |programme, hash|
         status = hash[:status]
         vaccine_methods =
-          (hash[:vaccine_methods] if programme.has_multiple_delivery_methods?)
+          (hash[:vaccine_methods] if programme.has_multiple_vaccine_methods?)
         programme_status_tag(programme, status, vaccine_methods)
       end
     )

app/components/app_triage_form_component.rb

@@ -29,7 +29,7 @@ def builder = GOVUKDesignSystemFormBuilder::FormBuilder
   def fieldset_options
     text = "Is it safe to vaccinate #{patient.given_name}?"
     hint =
-      if programme.has_multiple_delivery_methods?
+      if programme.has_multiple_vaccine_methods?
         if triage_form.consented_to_injection_only?
           "The parent has consented to the injected vaccine only"
         elsif triage_form.consented_to_injection?

app/forms/triage_form.rb

@@ -41,7 +41,7 @@ def save!
 
   def status_and_vaccine_method_options
     safe_to_vaccinate_choices =
-      if programme.has_multiple_delivery_methods?
+      if programme.has_multiple_vaccine_methods?
         consented_vaccine_methods.map { |method| "safe_to_vaccinate_#{method}" }
       else
         ["safe_to_vaccinate"]

app/helpers/consents_helper.rb

@@ -22,7 +22,7 @@ def consent_status_tag(consent)
 
     vaccine_method =
       if consent.vaccine_methods.present? &&
-           consent.programme.has_multiple_delivery_methods?
+           consent.programme.has_multiple_vaccine_methods?
         tag.span(
           Vaccine.human_enum_name(:method, consent.vaccine_methods.join("_")),
           class: "nhsuk-u-secondary-text-color"

app/models/programme.rb

@@ -75,24 +75,24 @@ def birth_academic_years
 
   def vaccine_methods = vaccines.map(&:method).uniq
 
-  def available_delivery_methods
-    vaccines.flat_map(&:available_delivery_methods).uniq
-  end
-
-  def available_delivery_sites
-    vaccines.flat_map(&:available_delivery_sites).uniq
-  end
-
-  def has_multiple_delivery_methods?
+  def has_multiple_vaccine_methods?
     # TODO: Ideally this would work as below, however that doesn't work well
     #  in a list as it results in N+1 issues, without deeply pre-fetching
     #  the vaccines which is a lot of data.
 
-    # available_delivery_methods.length > 1
+    # vaccine_methods.length > 1
 
     flu?
   end
 
+  def available_delivery_methods
+    vaccines.flat_map(&:available_delivery_methods).uniq
+  end
+
+  def available_delivery_sites
+    vaccines.flat_map(&:available_delivery_sites).uniq
+  end
+
   DOSE_SEQUENCES = {
     "flu" => 1,
     "hpv" => 1,