Polish needs additional word separators in dialogue

!4685 (merged) restricted topic linking to only happen after "\n\r \t'\"". This matches the English and French versions of Morrowind.exe, but doesn't match the Polish version which also considers ( and [ to be word separators.

Polish Morrowind.exe (with English game files):

English Morrowind.exe:

The most straightforward way to fix this is to add these characters to the string we check against. Capo raised the hypothetical concern that a topic starting with [ or ( wouldn't be linked correctly, but Morrowind.exe refuses to link these topics regardless. (They do otherwise work.)

I'd open an MR and add a test for Dżentelmen Jim Stacey kazał mi zabić człowieka imieniem Sjoring Kamienne Serce, mistrza gildii wojowników [gildia wojowników] w mieście Vivek., but I'd just be creating a merge conflict with !5146 (merged).