Update Tests for EDK2 File Explorer Fix

[BeataZdunczyk]

The problem you're addressing (if any)

We are currently using a workaround in the Execute File In File Explorer keyword due to a bug in EDK2.
Right now test have to press an extra arrow in the File Explorer.

Execute File In File Explorer
    [Documentation]    Execute the given file (with ENTER key)
    [Arguments]    ${target_file}
    # 1. Select desired file
    ${files}=    Get Submenu Construction
    Log    ${files}
    ${index}=    Get Index Of Matching Option In Menu    ${files}    ${target_file}
    # FIXME: We must add 1 due to empty selecatble space in File Manager
    Press Key N Times And Enter    ${index}+1    ${ARROW_DOWN}

The EDK2 issue is being fixed in: Dasharo/edk2#260.
Once this fix is merged, it will break the tests.

Describe the solution you'd like

• Identify all affected test cases
• Update affected test cases to apply the workaround conditionally.
• It is definitely affected in the Secure Boot tests, but it is necessary to check if any other tests are affected as well.
• Verify behavior with and without the EDK2 fix

Where is the value to a user, and who might that user be?

No response

Describe alternatives you've considered

No response

Additional context

No response