Remove OptionBase type

[Methuselah96]

Resolves #4696.

Unfortunately due to weak type detection, it doesn't work to have an Option generic type that doesn't have any properties in common with OptionBase since all of the properties on OptionBase are optional. See the attached issue for a more concrete example that causes issues.

export interface OptionBase {
  readonly label?: string;
  readonly value?: unknown;
  readonly isDisabled?: boolean;
  readonly __isNew__?: true;
}

[changeset-bot]

🦋 Changeset detected

Latest commit: ce9d4c0

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
react-select	Patch
@react-select/docs	Patch

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[JedWatson]

Thanks @Methuselah96