fix: fix_avoid_eiweiss_false_positive_for_allergens

[benbenben2]

What

This is due to underscores. Replacing: "_Weizen_eiweiß" by: "Weizen eiweiß" or "Weizeneiweiß" avoids having the eggs allergen.

For other allergens, the following regex seems to work:

			$text
				=~ s/(^| - |_|\(|\[|\)|\]|,|$the|$and|$of|;|\.|$)((\s*)\w.+?)(?=(\s*)(^| - |_|\(|\[|\)|\]|,|$and|;|\.|\b($traces_regexp)\b|$))/replace_allergen_between_separators($language,$product_ref,$1, $2, "",$`)/iesg;

However, in the case of _Weizen_eiweiß it leads to 2 allergens. Hence, suggested solution is to add (for German only to minimize probability of false positive) the case when underscore after the allergen is not at the end of the word (remove \b of the previous line. This is done only for \b after the allergen, not before, again to minimize probability of false positive).

Screenshot

Related issue(s) and discussion

• Fixes Separate 'Eiweiß' from 'Ei', because 'Eiweiß' does not contain any 'Ei' #8386

[sonarcloud]

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[stephanegigandet]

Thank you!