No validate "Day" in PayPal Express Checkout Settings

[edenduong]

Preconditions (*)

1. Magento 2.3-develop

Steps to reproduce (*)

1. Go to backend
2. Store->Configuration
3. Sales-> Payment Methods
4. In "PayPal Express Checkout", "Basic Settings - PayPal Express Checkout"
5. Choose "Payment Action" is "Order"
6. Fill "one" in "Authorization Honor Period (days)" "Order Valid Period (days)"
7. Save

Expected result (*)

1. Can not save because it is not number

Actual result (*)

1. Save normally

[m2-assistant]

Hi @edenduong. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

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• Information on your environment
• Steps to reproduce
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Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.3-develop instance - upcoming 2.3.x release

For more details, please, review the Magento Contributor Assistant documentation.

@edenduong do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

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[m2-assistant]

Hi @ajijshekh123. Thank you for working on this issue.
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[ajijshekh123]

Give me @magento give me 2.3-develop instance

[magento-engcom-team]

Hi @ajijshekh123. Thank you for your request. I'm working on Magento 2.3-develop instance for you

[magento-engcom-team]

Hi @ajijshekh123, here is your Magento instance.
Admin access: https://i-24302-2-3-develop.instances.magento-community.engineering/admin
Login: admin Password: 123123q
Instance will be terminated in up to 3 hours.

[ajijshekh123]

Currently, It is saved alphabetically words Ex:- One on "Authorization Honor Period (days)" and "Order Valid Period (days)" fields, It should not save. It should accept only digits.
See attached screenshot: