Deletes CPA values on CPA field type change (#31122)

* Deletes CPA values on CPA field type change

* Fix error method name reference

* Cleans the state when a CPA field's type is updated

* Fix types

* Fix linter

* Webapp no longer makes a decision on the change and server sents a flag in the WS message

* Fix linter

---------

Co-authored-by: Miguel de la Cruz <miguel@ctrlz.es>

server/channels/store/storetest/mocks/PropertyValueStore.go

@@ -62,17 +62,17 @@ func (_m *PropertyValueStore) Delete(groupID string, id string) error {
 	return r0
 }
 
-// DeleteForField provides a mock function with given fields: id
-func (_m *PropertyValueStore) DeleteForField(id string) error {
-	ret := _m.Called(id)
+// DeleteForField provides a mock function with given fields: groupID, fieldID
+func (_m *PropertyValueStore) DeleteForField(groupID string, fieldID string) error {
+	ret := _m.Called(groupID, fieldID)
 
 	if len(ret) == 0 {
 		panic("no return value specified for DeleteForField")
 	}
 
 	var r0 error
-	if rf, ok := ret.Get(0).(func(string) error); ok {
-		r0 = rf(id)
+	if rf, ok := ret.Get(0).(func(string, string) error); ok {
+		r0 = rf(groupID, fieldID)
 	} else {
 		r0 = ret.Error(0)
 	}