Fix #810: Updated emote tab current background to highlight-neutral-1

[goralight]

Fix #810

Simple fix to change the background color of the current emote tab selection from:
--seventv-background-transparent-2 => --seventv-highlight-neutral-1

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1 out of 2 committers have signed the CLA.

✅ TroyKomodo
❌ John

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[goralight]

John is linked to my @goralight , added a comment here.