fix: if no active quote is found error is thrown

[speedupmate]

if no active quote is found error is thrown, order placement is stopped , no redirect to success page is possible

Description (*)

If in combination of plugins some other process deactivates the quote before this plugin reacts this module will break checkout process with error "No Such Entity With Cart ID " and user is redirected to empty cart page.

simplest solution is to place the quote search to try/catch if it fails it fails silently. If this is a important feature other methods for searching quote need to be used

[LusienGG]

https://github.com/mageplaza/magento-2-smtp/pull/324 this is better solution

[KhietNguyen83]

Thank you for your contribution. I have merged your patch and will release it soon. Thank you!