[Forwardport] Declare module namespace before template path name(Magento_Sales::order/info.phtml).

[gelanivishal]

Original pull request

#16206

Description

When we override block info(Magento\Sales\Block\Order\Info) to my custom module.
It throws an error and finding order/info.phtml in my custom module.
I tried to extend Block Magento\Sales\Block\Order\Info from my custom module.

1 exception(s):
Exception #0 (Magento\Framework\Exception\ValidatorException): Invalid template file: 'order/info.phtml' in module: 'Vendor_Module' block's name: 'sales.order.info'

Fixed Issues (if relevant)

1. Declare module namespace before template path name.

Manual testing scenarios

1. I override info block

<preference for="Magento\Sales\Block\Order\Info"
				type="Vendor\Module\Block\Order\Info" />

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-engcom-team]

Hi @gelanivishal. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
Add the comment under your pull request to deploy test or vanilla Magento instance:

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[magento-engcom-team]

Hi @gelanivishal. Thank you for your contribution.
We will aim to release these changes as part of 2.3.0.
Please check the release notes for final confirmation.