[UI]:button spacing by setting default line-height

[FaheemOnHub]

Current Behavior

buttons currently have inconsistent vertical spacing due to improper line-height values. For example, the “Open In Operator” button shows excessive vertical whitespace.

we can set line-height: auto to ensure tighter buttons

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[arctic-beep]

I can work on it @FaheemOnHub

[yashodipmore]

@FaheemOnHub, this bug is interesting and would love to work on it. Could you please assign it to me?