fix: when entering gross, note the one cent problem

Related: pcsg/buero#344
Related: pcsg/buero#436

src/QUI/ERP/Accounting/Article.php

@@ -415,8 +415,11 @@ public function getUnitPriceUnRounded(): Price
             return new Price($this->nettoPriceNotRounded, $this->Currency);
         }
 
-        return $this->getUnitPrice();
-    }
+        if (isset($this->attributes['unitPrice'])) {
+            $this->nettoPriceNotRounded = $this->attributes['unitPrice'];
+        }
+
+        return new Price($this->nettoPriceNotRounded, $this->Currency);    }
 
     /**
      * Returns the article total sum

src/QUI/ERP/Accounting/Calc.php

@@ -453,6 +453,15 @@ public function calcArticleList(ArticleList $List, $callback = false): ArticleLi
                     if ($bruttoSum - $bruttoVatSum !== $nettoSum) {
                         $nettoSum = $nettoSum + $diff;
                     }
+
+                    // doof aber -> pcsg/buero#344
+                    if (
+                        !$priceFactors->count()
+                        && count($articles) === 1
+                        && $nettoSubSum !== $nettoSum
+                    ) {
+                        $nettoSum = $nettoSubSum;
+                    }
                 }
             }