Existed supplier notification is missing + button clicked event to be modified

[galnitsan]

Overview of the problem

This is about the Spark Suppliers module

Description

Enhancement:
While enter a supplier id (company id or personal id) in the input form,
if the supplier id is already existed in db,
it should have a notification of:
"The supplier id is already in the system, click "continue" to edit or type a new supplier id"

Expected behavior

To have a notification of :
1."The supplier id is already in the system, click "continue" to edit or type a new supplier id"
2. The green button "continue" will lead to "edit supplier" screen.

Actual behavior

No notification and no option in this screen to continue to edit a supplier.

[galnitsan]

requested by @guyzohar1
and will be instructed by @NitayRabi