Updates to use dynamic/responsive styles on web (#1351)

* Move most responsive queries to the hook

* Fix invalid CSS value

* Fixes to tablet render of post thread

* Fix overflow issues on web

* Fix search header on tablet

* Fix QP margin in web composer

* Fix: only apply double gutter once to flatlist (close #1368)

* Fix styles on discover feeds header

* Fix double discover links in multifeed

src/view/com/util/load-latest/LoadLatestBtn.web.tsx

@@ -3,8 +3,8 @@ import {StyleSheet, TouchableOpacity} from 'react-native'
 import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
 import {Text} from '../text/Text'
 import {usePalette} from 'lib/hooks/usePalette'
+import {useWebMediaQueries} from 'lib/hooks/useWebMediaQueries'
 import {LoadLatestBtn as LoadLatestBtnMobile} from './LoadLatestBtnMobile'
-import {isMobileWeb} from 'platform/detection'
 import {HITSLOP_20} from 'lib/constants'
 
 export const LoadLatestBtn = ({
@@ -19,7 +19,8 @@ export const LoadLatestBtn = ({
   minimalShellMode?: boolean
 }) => {
   const pal = usePalette('default')
-  if (isMobileWeb) {
+  const {isMobile} = useWebMediaQueries()
+  if (isMobile) {
     return (
       <LoadLatestBtnMobile
         onPress={onPress}