Uncomment `extension_dir` in Windows releases by default in php.ini example files

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Description

Description

This step is needed after download from https://windows.php.net/download/ in order to make the packed extensions to work.

Both production/development distributed php.ini files should have this option uncommented by default.

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3. Fork the repository and make your change on a branch.
4. Open a pull request that references the issue number.

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