fix: Set Maintenance Status fields as Read Only (#18634)
fix: Set Maintenance Status fields as Read Only (#18634)

Maintenance Status is set based on warranty_expiry_date and
amc_expiry_date. Even if they are editable they are set programmatically
server side. Better to make them as read only.
gsnbng/erpnext,gsnbng/erpnext,gsnbng/erpnext,gsnbng/erpnext