Fix another edge case in time splitter

tests/NodaTimeSplitterTest.php

@@ -699,6 +699,8 @@ final class NodaTimeSplitterTest extends TestCase {
 
         $output = NodaTimeSplitter::attempt_splitting("65497028c51eb");
         self::assertEquals($output, []);
+        $output = NodaTimeSplitter::attempt_splitting("6552cf08b0196 test tag");
+        self::assertEquals($output, []);
 
         # $output = NodaTimeSplitter::attempt_splitting("Nach 1944-1964");
         # self::assertEquals($output, []);