Adjust nested menus positioning in horizontal menu

[SavouryGin]

Steps to Reproduce

1. Go to Organisms > Menu > Horizontal Menu
2. Open one of the nested menu and observe its positioning

Expected Behavior

The nested menu should appear on the left side of the opening element

Actual Behavior

The nested menu appears under the opening element with small margin to the left

Additional Context

No response

Code of Conduct

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