[519023] Check cancellation less frequently in conflict detection

Checking cancellation takes some time when executed for each diff:
- Only check every 100 diffs when we update the monitor subtask

Bug: 519023
Change-Id: Ibfa5da0415b8fa64a1ec37418c56a018002d4b05
Signed-off-by: Martin Fleck <mfleck@eclipsesource.com>
1 file changed