🩹 Let rofi match case insensitively as well

[nobodyinperson]

For some reason, when using rofi as picker, the matching was performed case-sensitively although all other pickers were given the -i option. This Pull Request adds -i to rofi as well.

[marty-oehme]

Very nice that was clearly an oversight on my part! I wonder how we could test for the same behaviors of the different pickers..

[marty-oehme]

Um, I'm not entirely sure what happened here - this should be merged but instead we just have a dangling commit?

@nobodyinperson can you perhaps create a quick second pull request with the same change (doesn't have to be fancy)?
So we can merge it correctly and have your fix on the main branch after all.