Fix --report_canonical default to auto to match help text and ensure preset strategies apply correctly

Author: wwliao

isoquant.py

@@ -152,7 +152,7 @@ def add_hidden_option(*args, **kwargs):  # show command only with --full-help
                                    choices=[e.name for e in StrandnessReportingLevel],
                                    help="reporting level for novel transcripts based on canonical splice sites;"
                                         " default: " + StrandnessReportingLevel.auto.name,
-                                   default=StrandnessReportingLevel.only_stranded.name)
+                                   default=StrandnessReportingLevel.auto.name)
     add_additional_option_to_group(algo_args_group, "--polya_requirement", type=str,
                                    choices=[e.name for e in PolyAUsageStrategies],
                                    help="require polyA tails to be present when reporting transcripts; "