Fix timeout in waitDisappearance method calls in DexLoginPage

[dmytro-ndp]

What does this PR do?

It fixes incorrect wait timeout when run Smoke test with empty password value, like https://github.com/che-incubator/che-code/actions/runs/20744835965/job/59559776902

          ▼ DexLoginPage.waitDexLoginPageDisappearance
            ‣ DriverHelper.waitDisappearance - By(css selector, .dex-container)
            ‣ DriverHelper.waitDisappearanceBoolean - By(css selector, .dex-container)
            ‣ DriverHelper.isVisible - By(css selector, .dex-container)
            ‣ DriverHelper.wait - (1000 milliseconds)
            ‣ DriverHelper.isVisible - By(css selector, .dex-container)
            ‣ DriverHelper.wait - (1000 milliseconds)
            ‣ DriverHelper.isVisible - By(css selector, .dex-container)
            ‣ DriverHelper.wait - (1000 milliseconds)
            ‣ DriverHelper.isVisible - By(css selector, .dex-container)
            ‣ DriverHelper.wait - (1000 milliseconds)
...
(This repeats for more than one hour.)

Screenshot/screencast of this PR

What issues does this PR fix or reference?

#23701

How to test this PR?

Run smoke test in che-code repo with empty password value.

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix or new feature
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

Reviewers, please comment how you tested the PR when approving it.

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Assisted-by: Claude Code