[Feature]: Implement hasAttribute(String)

🚀 Feature Request

I want to check if a locator has an attribute.
I think that's what toHaveAttribute(name) is doing in typescript.

I tried to:
assertThat(getInputLocator()).not().hasAttribute("min", ""); // that will forbid empty min but not a filled value
or
assertThat(getInputLocator()).not().hasAttribute("min", Pattern.compile(".*"));

And the result is:

• unexpected value "undefined"

With a new API hasAttribute(String attributeName), I would be able to do:
assertThat(getInputLocator()).not().hasAttribute("min");

That will test if there is an attribute min.

Example

import com.microsoft.playwright.assertions.PlaywrightAssertions;
import java.util.regex.Pattern;

Locator el = page.locator("#my-el");

// Assert the attribute is NOT present:
PlaywrightAssertions.assertThat(el)
    .not()
    .hasAttribute("min", Pattern.compile(".*"));

Motivation

The only workaround I found is to get the attribute and asserts it's null. But it's not the good practice.

Having that will help to check to the absence of a attribute.

Comienza en el punto de entrada de aserciones de Java mostrado en el issue, PlaywrightAssertions.assertThat, e inspecciona las sobrecargas existentes de hasAttribute. Confirma cómo se representa la ausencia de un atributo del locator y añade la forma solicitada que solo recibe String, de modo que se puedan comprobar la presencia y la ausencia sin un valor; se considera terminado cuando la API admite el uso mostrado de .not().hasAttribute("min").