feat: set sender_name_field in reference doc

(cherry picked from commit 1dca311)

frappe/email/receive.py

@@ -892,6 +892,9 @@ def _create_reference_document(self, doctype):
 		if email_fields.sender_field:
 			parent.set(email_fields.sender_field, frappe.as_unicode(self.from_email))
 
+		if email_fields.sender_name_field:
+			parent.set(email_fields.sender_name_field, frappe.as_unicode(self.from_real_name))
+
 		parent.flags.ignore_mandatory = True
 
 		try:
@@ -935,7 +938,7 @@ def get_email_fields(doctype):
 		"""Returns Email related fields of a doctype."""
 		fields = frappe._dict()
 
-		email_fields = ["subject_field", "sender_field"]
+		email_fields = ["subject_field", "sender_field", "sender_name_field"]
 		meta = frappe.get_meta(doctype)
 
 		for field in email_fields: