Course Builder Fails to Save Lessons, When Lesson Count Reaches 100+

### Reproduction Steps

+ Created a new Course, added 200 lessons.
+ Course Syllabus Block, read course as having 200 lessons
+ Logged into Course as a Student. Course Syllabus presented 100 lessons. The last three in the syllabus read as "100 of 200"
+ Returned to Course Builder, added another 70 classes. Attempted to save the course, but process timed out.

### Expected Behavior

+ Course Builder would present 200 lessons for a student to use.

### Actual Behavior

+ Student account ended up being able to access 216 lessons from the course.
+ After continued testing, the Course Syllabus block was, on occasion, able to display more than 100 lessons. But often it was still well below the full lesson count.

### Error Messages / Logs

N/A

### System Information

System Report

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### Browser, Device, and Operating System Information

+ Chrome, MacOS