[Backport] magento/magento2#20773: Do not throw exception during autoload

[amol2jcommerce]

Original Pull Request

#20950

Description (*)

Avoid uncaught exceptions during autoloading. PSR-4 dictates that must not happen. Return false instead.
Instead, try to log the exception message.

Fixed Issues (if relevant)

#20773

Manual testing scenarios (*)

Run class_exists(FooFactory::class);.
More information to reproduce the problem is in the issue thread.

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 @amol2jcommerce. 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:

• @magento-engcom-team give me test instance - deploy test instance based on PR changes
• @magento-engcom-team give me 2.2-develop instance - deploy vanilla Magento instance

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

[orlangur]

Hi @amol2jcommerce, let's wait a little bit just in case author of original PR would like to create a backport ;)

[amol2jcommerce]

@orlangur please review.

[orlangur]

Perfect @amol2jcommerce 😉

[magento-engcom-team]

Hi @orlangur, thank you for the review.
ENGCOM-4542 has been created to process this Pull Request

[VasylShvorak]

✔️ QA passed

[ghost]

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