[typescript-jquery] Fix promise resolution to adhere to the type annotation

[grollinger]

PR checklist

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Description of the PR

Fixes #8383

The type annotation that is generated for an API states that the JQueryPromise<...> will be resolved with a single value. The implementation, on the other hand resolves with two.

This changes the implementation to resolve the promise in accordance with the type annotation. It also adds another type specifying what will be passed if the promise is rejected.

[baol]

Great @grollinger ! Thanks

[baol]

@macjohnny , FYI

[rahulbpatel]

What's the word on merging this fix in swagger-codegen? Looks like it was already closed in openapi-generator.