Remove Keyboard.dismiss() calls from composer sheet buttons

The sheet presentation handles keyboard dismissal, so these manual
calls are unnecessary.

https://claude.ai/code/session_011cNDhEb2cDgg5QbVuzEyH1

src/view/com/composer/labels/LabelsBtn.tsx

@@ -1,5 +1,5 @@
 import {useState} from 'react'
-import {findNodeHandle, Keyboard, View} from 'react-native'
+import {findNodeHandle, View} from 'react-native'
 import {msg} from '@lingui/core/macro'
 import {useLingui} from '@lingui/react'
 import {Trans} from '@lingui/react/macro'
@@ -64,10 +64,7 @@ export function LabelsBtn({
         color="secondary"
         size="small"
         testID="labelsBtn"
-        onPress={() => {
-          Keyboard.dismiss()
-          control.open()
-        }}
+        onPress={() => control.open()}
         label={_(msg`Content warnings`)}
         accessibilityHint={_(
           msg`Opens a dialog to add a content warning to your post`,

src/view/com/composer/threadgate/ThreadgateBtn.tsx

@@ -1,7 +1,6 @@
 import {useEffect, useMemo, useState} from 'react'
 import {
   findNodeHandle,
-  Keyboard,
   type StyleProp,
   type View,
   type ViewStyle,
@@ -32,7 +31,6 @@ import {Group3_Stroke2_Corner0_Rounded as GroupIcon} from '#/components/icons/Gr
 import * as Tooltip from '#/components/Tooltip'
 import {Text} from '#/components/Typography'
 import {useAnalytics} from '#/analytics'
-import {IS_NATIVE} from '#/env'
 import {useThreadgateNudged} from '#/storage/hooks/threadgate-nudged'
 
 export function ThreadgateBtn({
@@ -86,10 +84,6 @@ export function ThreadgateBtn({
       nudged: tooltipWasShown,
     })
 
-    if (IS_NATIVE && Keyboard.isVisible()) {
-      Keyboard.dismiss()
-    }
-
     setShowTooltip(false)
     setThreadgateNudged(true)