Do not use extra lr in typst writer

[istudyatuni]

texmath inserts lr for every parentheses it found, though parentheses are scaled automatically. I think it would be good to not write these extra lr

[istudyatuni]

I noticed in tests that somewhere \(..\) is written, I'm probably missing something here?

[jgm]

You're right that we use lr more than strictly needed. We use it to render any EDelimited element. I think we could omit the lr when the delimiters are a matched pair () [] or {} and there is no middle delimiter of the same sort...