Fix array `minItems`/`maxItems` bugs

[simonsolnes]

Changes

Fix bugs related to minItems and maxItems when using --array-length

Issue: https://github.com/openapi-ts/openapi-typescript/issues/1781

Fix incorrectly generating tuples from 0 to (max-min) elements instead of min to max elements.

For example, minItems: 1, maxItems: 3 was producing [] | [T] | [T, T] instead of [T] | [T, T] | [T, T, T].

When an array's items was also an array type with minItems equal to maxItems, the generated TypeScript was getting incorrectly double-nested (e.g. string[][] instead of string[]).

How to Review

The tests shows the expected results

Checklist

• [x] Unit tests updated
• [~] docs/ updated (if necessary)
• [~] pnpm run update:examples run (only applicable for openapi-typescript)