Return type of handle is incorrect

[aboyton]

element.handle doesn't particularly well documented (only reference I can see is https://suite.st/docs/suitest-api/assertions-test-subjects/#element so I'm not quite sure what the multiple flag does), but it appears the return type doesn't always match what it actually returns.

From manual testing, it seems multiple: true makes handle return an array of strings, and without it, it returns a string.

await suitest.element({active: true}).handle(); // string
await suitest.element({active: true}).handle({multiple: false}); // string
await suitest.element({active: true}).handle({multiple: true}); // string[]

Instead it always returns string[].