fix: make pdf_generator select field

As per review, renamed chrome_pdf_generator to pdf_generator and made it a select field.
- default option available for select is wkhtmltopdf.
- default for new print formats is wkhtmltopdf.
- print designer on install adds a new option ( chrome ) to the select field.
- added patch to update existing print format to wkhtmltopdf.

frappe/patches.txt

@@ -242,3 +242,4 @@ execute:frappe.db.set_single_value("Workspace Settings", "workspace_setup_comple
 frappe.patches.v16_0.add_app_launcher_in_navbar_settings
 frappe.desk.doctype.workspace.patches.update_app
 frappe.patches.v16_0.move_role_desk_settings_to_user
+frappe.printing.doctype.print_format.patches.sets_wkhtmltopdf_as_default_for_pdf_generator_field

frappe/printing/doctype/print_format/patches/sets_wkhtmltopdf_as_default_for_pdf_generator_field.py

@@ -0,0 +1,7 @@
+import frappe
+
+
+def execute():
+	"""sets "wkhtmltopdf" as default for pdf_generator field"""
+	for pf in frappe.get_all("Print Format", pluck="name"):
+		frappe.db.set_value("Print Format", pf, "pdf_generator", "wkhtmltopdf")

frappe/printing/doctype/print_format/print_format.json

@@ -13,7 +13,7 @@
   "standard",
   "custom_format",
   "disabled",
-  "chrome_pdf_generator",
+  "pdf_generator",
   "section_break_6",
   "print_format_type",
   "raw_printing",
@@ -258,17 +258,17 @@
    "options": "Hide\nTop Left\nTop Center\nTop Right\nBottom Left\nBottom Center\nBottom Right"
   },
   {
-   "default": "0",
-   "description": "<a href=\"https://github.com/frappe/print_designer/\">Print Designer</a> should be installed to use Chrome.",
-   "fieldname": "chrome_pdf_generator",
-   "fieldtype": "Check",
-   "label": "Use Chrome PDF Generator"
+   "default": "wkhtmltopdf",
+   "fieldname": "pdf_generator",
+   "fieldtype": "Select",
+   "label": "PDF Generator",
+   "options": "wkhtmltopdf"
   }
  ],
  "icon": "fa fa-print",
  "idx": 1,
  "links": [],
- "modified": "2025-02-13 18:39:24.319650",
+ "modified": "2025-02-14 14:49:39.181074",
  "modified_by": "Administrator",
  "module": "Printing",
  "name": "Print Format",