[FIX] web: display full error message
[FIX] web: display full error message

In case of a MemoryError, there is no error message, the user gets a
"Database restore error: "

without any details.

Instead fallback to the repr.

This way, a wrong password is
"Database restore error: Access denied"
and a memoryerror

"Database restore error: MemoryError()"

Closes #17393

ygol/odoo,hip-odoo/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,ygol/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,ygol/odoo