Fixing web_ide_spec by adding more time to fix in slow network job

What does this MR do and why?

Fixing add_new_directory_in_web_ide_spec by adding more time to fix in nightly - slow network job

See #387609 (closed)

Screenshots or screen recordings

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How to set up and validate locally

QA_LOG_LEVEL=DEBUG bundle exec rspec qa/specs/features/browser_ui/3_create/web_ide/add_new_directory_in_web_ide_spec.rb

MR acceptance checklist

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