fix: title should never be empty

(cherry picked from commit 4b4d66d2a3)

frappe/website/doctype/web_form/templates/web_form.html

@@ -58,7 +58,7 @@
 				<div class="title">
 					<div class="web-form-title ellipsis">
 						{% if show_list and not is_new %}
-							<h1 class="ellipsis">{{ _(web_form_title.capitalize()) }}</h1>
+							<h1 class="ellipsis">{{ _(web_form_title) }}</h1>
 							<p class="ellipsis">{{ _(title) }}</p>
 						{% else %}
 							<h1 class="ellipsis">{{ _(title) }}</h1>

frappe/website/doctype/web_form/web_form.py

@@ -287,8 +287,9 @@ def get_context(context):
 			context.doc_name = frappe.form_dict.name
 			context.reference_doc = frappe.get_doc(self.doc_type, context.doc_name)
 			context.web_form_title = context.title
-			context.title = strip_html(
-				context.reference_doc.get(context.reference_doc.meta.get_title_field())
+			context.title = (
+				strip_html(context.reference_doc.get(context.reference_doc.meta.get_title_field()))
+				or context.doc_name
 			)
 			context.reference_doc.add_seen()
 			context.reference_doctype = context.reference_doc.doctype