fix: decreasing_or_equal_stop_time_distance includes prevShapeDistTraveled

[cka-y]

Summary:
decreasing_or_equal_stop_time_distance includes prevShapeDistTraveled, not prevStopTimeDistTraveled

Closes #1556

Expected behavior:
The name of the field in the report in now replaced from prevStopTimeDistTraveled to prevShapeDistTraveled in the report.
Note: the logic was already implemented - it was prevShapeDistTraveled that was in the report but under the name prevStopTimeDistTraveled.

Using this feed, we get:

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[github-actions]

✅ Rule acceptance tests passed.
New Errors: 0 out of 1477 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1477 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
New Warnings: 0 out of 1477 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Warnings: 0 out of 1477 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1477 sources (~0 %) are corrupted.
Commit: cc67976
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.

[davidgamez]

LGTM

[github-actions]

✅ Rule acceptance tests passed.
New Errors: 0 out of 1477 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1477 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
New Warnings: 0 out of 1477 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Warnings: 0 out of 1477 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1477 sources (~0 %) are corrupted.
Commit: 6843241
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.