Treat hyphens as spaces in select (hover) search, like in all other searches

At the moment, two words separated by a hyphen are considered as one word, which is grammatically correct, but practically annoying when trying to find a rem via a quick popup search that could conceivably be written without the hyphen. See images for current behaviour.

The testing rem.

Inline search, undesired behaviour.

[[ Reference search, desired behaviour.

"Main" ctrl+p search, also desired.