test(toggle): migrate to generators (#27390)

Issue number: N/A

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## What is the current behavior?
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Toggle tests are using legacy syntax

## What is the new behavior?
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this PR. -->

- Toggle tests are using modern syntax


https://github.com/ionic-team/ionic-framework/pull/27390/commits/16bb695631035cf35128480941ffec1a310b0357

- The basic directory had unused screenshots, so I removed them.


https://github.com/ionic-team/ionic-framework/pull/27390/commits/8b2480c391beb1fbbe3342bbc20611fdc6f22498

- The on/off dark mode tests do not vary across directions, so I removed
the RTL checks

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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