CP-17561 stream mkdir

[niden]

Hello!

• Type: bug fix
• Link to issue: [BUG]: Stream mkdir() Error #17561

In raising this pull request, I confirm the following:

• I have read and understood the Contributing Guidelines
• I have checked that another pull request for this purpose does not exist
• I wrote some tests for this PR
• I have updated the relevant CHANGELOG
• I have created a PR for the documentation about this change

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Phalcon\Storage\Adapter\Stream and Phalcon\Queue\Adapter\Stream\StreamContext reporting a mkdir(): File exists warning when a different process makes the directory first.

Thanks