Rename quantum_random.py to quantum_random.py.DISABLED.txt

[cclauss]

Fixes #7682

@dhruvmanila @ChrisO345 Temporarily disable quantum_random.py which is causing sporadic pytest failures.

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• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

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[dhruvmanila]

Um, it's better to ignore the file in pytest.ini or command-line call instead of this.

[cclauss]

I disagree. This is a temporary change. Doing it this way, we can see just by looking at the file that it is disabled. That information is not hidden away so ini file that no one ever looks at.