[native] Increase expansion button tap target in community side drawer

Summary:
https://linear.app/comm/issue/ENG-3608/increase-expansion-button-tap-target-in-community-side-drawer

In my opinion the button is easy enough to tap without the exapnsion, even on my tiny iPod, but whatever.

Before:
{F3249117}

After:
{F3249118}

Test Plan: Tap the chevron

Reviewers: kamil, bartek

Reviewed By: kamil

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D13948

native/navigation/expand-buttons.react.js

@@ -8,7 +8,7 @@ import { useStyles } from '../themes/colors.js';
 
 const iconSize = 12;
 const buttonSize = 24;
-const hitSlopValue = 6;
+const hitSlopValue = 10;
 const padding = (buttonSize - iconSize) / 2;
 
 const hitSlop = {