Issue number: N/A
---------
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issue. -->
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## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->
Range tests are using legacy syntax
## What is the new behavior?
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this PR. -->
- Range tests are using generator syntax
849e127974
- The scroll target tests do not vary across modes so I removed those
additional checks.
0b8c15838a
- The standalone directory had some screenshots that were not in use, so
I deleted them
5b306f28b7
- The modern range event tests do not vary across modes/directions, so I
removed the additional checks.
699fb62789
- The legacy scroll target tests do not vary across modes so I removed
those additional checks.
c7dbb2d380
- The legacy range functional tests do not vary across modes/directions,
so I removed the additional checks.
aa06ba8ebf
- The legacy range event tests do not vary across modes/directions, so I
removed the additional checks.
## Does this introduce a breaking change?
- [ ] Yes
- [x] No
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and migration path for existing applications below. -->
## Other information
<!-- Any other information that is important to this PR such as
screenshots of how the component looks before and after the change. -->