fix: Redis cache handler deleteMatching() not working when a prefix is being used

[TeamTizo]

deleteMatching wasn't working for Redis cache when a prefix was being used. adding prefix here fixed the issue.

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[kenjis]

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