Graphviz eats spaces in records

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If:

• we use «record» shape for nodes;
• Russian (on other non-ascii Unicode labels).
• Surround record separator «|» with spaces

When Graphviz eats all spaces in record shape cell.

digraph G { 
 rankdir=LR;  
 node[shape=record style=rounded];
 reclat[label="Ok with spaces (en):|{ AAA AAA AAA | BBB BBB BBB | CCC CCC CCC }"];
 recrus[label="Eats spaces (rus):|{ ААА ААА ААА | ВВВ ВВВ ВВВ | ССС ССС ССС }"];
 rusok [label="Ok with spaces (rus):|{ААА ААА ААА|ВВВ ВВВ ВВВ|ССС ССС ССС}"];
}