fix: do not remove workspaces while app is uninstalled

(cherry picked from commit cab95e12f4)

frappe/desk/doctype/workspace/workspace.py

@@ -138,6 +138,7 @@ class Workspace(Document):
 def disable_saving_as_public():
 	return (
 		frappe.flags.in_install
+		or frappe.flags.in_uninstall
 		or frappe.flags.in_patch
 		or frappe.flags.in_test
 		or frappe.flags.in_fixtures