fix: RedisHandler::deleteMatching() not deleting matching keys if cache prefix is used

[paulbalandan]

Description
Supersedes and closes #8878

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

[paulbalandan]

@samsonasik It seems the AssertRegExpRector is giving a wrong transformation of a preg_match assertion if the $matches variable is used in a subsequent assert.
See https://github.com/codeigniter4/CodeIgniter4/actions/runs/9449485549/job/26025852003?pr=8952

[samsonasik]

@paulbalandan could you reproduce at https://getrector.com/demo and report at https://github.com/rectorphp/rector/issues ? Thank you.

[paulbalandan]

@samsonasik see rectorphp/rector#8669