fix(StatusStickerPackClickPopup): fix crash

the button to (un)install would be either greyed out or result in a crash:
- we were passing the popup a wrong store (w/o networkConnectionStore)
- the condition to `greyedOut` was inverted

ui/app/AppLayouts/Chat/views/ChatView.qml

@@ -87,7 +87,7 @@ StatusSectionLayout {
         emojiPopup: root.emojiPopup
         stickersPopup: root.stickersPopup
         onOpenStickerPackPopup: {
-            Global.openPopup(statusStickerPackClickPopup, {packId: stickerPackId} )
+            Global.openPopup(statusStickerPackClickPopup, {packId: stickerPackId, store: root.stickersPopup.store} )
         }
         onOpenAppSearch: {
             root.openAppSearch();
@@ -167,7 +167,6 @@ StatusSectionLayout {
     Component {
         id: statusStickerPackClickPopup
         StatusStickerPackClickPopup{
-            store: root.rootStore
             onClosed: {
                 destroy();
             }

ui/imports/shared/status/StatusStickerPackClickPopup.qml

@@ -125,7 +125,7 @@ ModalPopup {
         isInstalled: installed
         isBought: bought
         isPending: pending
-        greyedOut: store.networkConnectionStore.stickersNetworkAvailable
+        greyedOut: !store.networkConnectionStore.stickersNetworkAvailable
         tooltip.text: store.networkConnectionStore.stickersNetworkUnavailableText
         onInstallClicked: {
             stickersModule.install(packId);