[Feature]: Expect.soft and soft assertions

[unickq]

Clear and concise description of the problem

Soft assertions.

The idea of soft assertions - do not terminate test execution, but mark the test as failed.

Description can be taken from jestjs/jest#13205 and microsoft/playwright#11800.
Playwright currently supports it, which makes its test runner amazing. I think it would be great to have this in vitest

// Make a few checks that will not stop the test when failed...
await expect.soft(page.getByTestId('status')).toHaveText('Success');
await expect.soft(page.getByTestId('eta')).toHaveText('1 day');

// ... and continue the test to check more things.
await page.getByRole('link', { name: 'next page' }).click();
await expect.soft(page.getByRole('heading', { name: 'Make another order' })).toBeVisible();

Suggested solution

https://playwright.dev/docs/test-assertions#soft-assertions
microsoft/playwright#11800

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[sheremet-va]

There was an idea to implement this as an optional field on a test in #2139, but I agree that expect.soft is a better API.

It also should be easier to implement than in Jest, because our expect is bound to a test.