* ImageLib: fix str syntax
* stackSentl: rename slc workflow merge for consistency
rename the mergeSLC step in "slc" workflow, to be consistent with the other workflows.
* topsStack: check inconsistent num of bursts in secondary images
+ extractCommonValidRegion.py: add dropSecondarysWithDifferentNumberOfBursts() to discard those acquisitions during the common region calculation
+ mergeBursts.py: skip secondarys with inconsistent num of bursts by raise exception and exit
+ s1a_isce_utils.adjustValidSampleLine_V2(): remove a redundant line
Co-authored-by: Zhang Yunjun <yunjunz@users.noreply.github.com>