EQL: implement case sensitivity for match and wildcard string functions

[astefan]

Following a similar approach in #56404, implement case sensitivity based on request parameter for match and wildcard string functions.

[elasticmachine]

Pinging @elastic/es-ql (:Query Languages/EQL)

[caiomelo22]

Hi! Can I try to solve this issue?

[rw-access]

Hey, @caiomelo22. I appreciate the enthusiasm, but unfortunately I forgot to close this issue back in 7.10, since it's no longer needed.

Thanks for the unintentional nudge! If you're looking for issues to help with I would recommend looking for "help wanted" + "good first issue." Here's the filtered list