Fix mtests after Leland 0.72

(or 0.71, hard to tell) which seems to have caused this difference.
This mtest came into the code base via the change for ENG-21, PR musescore#8506

Author: Jojo-Schmitz

mtest/musicxml/io/testConnectedArpeggios_ref.mscx

@@ -158,7 +158,7 @@
               </Note>
             <Arpeggio>
               <subtype>0</subtype>
-              <userLen2>2.10812</userLen2>
+              <userLen2>2.11</userLen2>
               </Arpeggio>
             </Chord>
           <Chord>
@@ -424,7 +424,7 @@
               </Note>
             <Arpeggio>
               <subtype>0</subtype>
-              <userLen2>2.83812</userLen2>
+              <userLen2>2.84</userLen2>
               </Arpeggio>
             </Chord>
           <Chord>
@@ -477,7 +477,7 @@
               </Note>
             <Arpeggio>
               <subtype>0</subtype>
-              <userLen2>2.98812</userLen2>
+              <userLen2>2.99</userLen2>
               </Arpeggio>
             </Chord>
           <Chord>