[Neue] Buttons (#5406)

* Re-align button sizing

(cherry picked from commit bcec243bb59dfe468313d98ba61f464d9750feec)

* Use large, small, tiny

(cherry picked from commit 1dc333c2993ab7f2e0ac750c0670dcec9a7069d0)

* Tweaks

src/view/com/composer/GifAltText.tsx

@@ -160,7 +160,7 @@ function AltTextInner({
           </View>
           <Button
             label={_(msg`Save`)}
-            size="medium"
+            size="large"
             color="primary"
             variant="solid"
             onPress={onPressSubmit}>

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

@@ -60,7 +60,7 @@ export function ThreadgateBtn({
         <Button
           variant="solid"
           color="secondary"
-          size="xsmall"
+          size="small"
           testID="openReplyGateButton"
           onPress={onPress}
           label={label}

src/view/com/composer/videos/SubtitleDialog.tsx

@@ -44,7 +44,7 @@ export function SubtitleDialogBtn(props: Props) {
             ? _('Opens captions and alt text dialog')
             : _('Opens alt text dialog')
         }
-        size="xsmall"
+        size="small"
         color="secondary"
         variant="ghost"
         onPress={() => {
@@ -169,7 +169,7 @@ function SubtitleDialogInner({
         <View style={web([a.flex_row, a.justify_end])}>
           <Button
             label={_(msg`Done`)}
-            size={isWeb ? 'small' : 'medium'}
+            size={isWeb ? 'small' : 'large'}
             color="primary"
             variant="solid"
             onPress={() => {

src/view/com/composer/videos/SubtitleFilePicker.tsx

@@ -57,7 +57,7 @@ export function SubtitleFilePicker({
         <Button
           onPress={handleClick}
           label={_('Select subtitle file (.vtt)')}
-          size="medium"
+          size="large"
           color="primary"
           variant="solid"
           disabled={disabled}>

src/view/com/notifications/FeedItem.tsx

@@ -412,7 +412,7 @@ function SayHelloBtn({profile}: {profile: AppBskyActorDefs.ProfileViewBasic}) {
       label={_(msg`Say hello!`)}
       variant="ghost"
       color="primary"
-      size="xsmall"
+      size="small"
       style={[a.self_center, {marginLeft: 'auto'}]}
       disabled={isLoading}
       onPress={async () => {

src/view/com/util/post-ctrls/RepostButton.tsx

@@ -157,7 +157,7 @@ let RepostButton = ({
               label={_(msg`Cancel quote post`)}
               onAccessibilityEscape={close}
               onPress={close}
-              size="medium"
+              size="large"
               variant="solid"
               color="primary">
               <ButtonText>{_(msg`Cancel`)}</ButtonText>

src/view/com/util/post-embeds/VideoEmbedInner/web-controls/ControlButton.tsx

@@ -26,7 +26,7 @@ export function ControlButton({
       onPress={onPress}
       variant="ghost"
       shape="round"
-      size="medium"
+      size="large"
       style={a.p_2xs}
       hoverStyle={{backgroundColor: 'rgba(255, 255, 255, 0.1)'}}>
       {active ? (