fix(runner): Ensure inner suite { sequential: true } correctly overrides outer suite { concurrent: true }

[pengooseDev]

Description

Fixes issue #5716

This PR addresses an issue where an inner suite with { sequential: true } does not correctly override an outer suite with { concurrent: true }. Previously, the inheritance logic for options.concurrent and options.sequential led to unexpected behavior where conflicting options were not handled properly. This fix ensures that inner suites with { sequential: true } override outer suites with { concurrent: true }, providing the expected behavior for nested suite configurations.

• Adjust the logic in createSuiteCollector to properly handle conflicting concurrent and sequential options.
• Ensure that options.concurrent and options.sequential are inherited with clear default values, preventing undefined values.
• Update the task context to accurately reflect the intended concurrency behavior.

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

• It's really useful if your PR references an issue where it is discussed ahead of time. If the feature is substantial or introduces breaking changes without a discussion, PR might be closed.
• Ideally, include a test that fails without this PR but passes with it.
• Please, don't make changes to pnpm-lock.yaml unless you introduce a new test example.

Tests

• Run the tests with pnpm test:ci.

Documentation

• If you introduce new functionality, document it. You can run documentation with pnpm run docs command.

Changesets

• Changes in changelog are generated from PR name. Please, make sure that it explains your changes in an understandable manner. Please, prefix changeset messages with feat:, fix:, perf:, docs:, or chore:.