fix long-press message/chat preview is missing (#20349)

src/status_im/common/bottom_sheet/style.cljs

@@ -14,8 +14,7 @@
    :z-index                 1
    :max-height              max-height
    :border-top-left-radius  sheet-border-radius
-   :border-top-right-radius sheet-border-radius
-   :overflow                :hidden})
+   :border-top-right-radius sheet-border-radius})
 
 (def gradient-bg
   {:position :absolute
@@ -23,13 +22,22 @@
    :left     0
    :right    0})
 
-(def shell-bg
-  {:position         :absolute
-   :background-color (if platform/ios? colors/white-opa-5 colors/neutral-100-opa-90)
+(defn shell-bg
+  [blur-background]
+  {:background-color (if blur-background
+                       blur-background
+                       (if platform/ios? colors/white-opa-5 colors/neutral-100-opa-90))
+   :flex             1})
+
+(def shell-bg-container
+  {:border-top-left-radius  sheet-border-radius
+   :border-top-right-radius sheet-border-radius
    :left                    0
    :right                   0
    :top                     0
-   :bottom           0})
+   :bottom                  0
+   :position                :absolute
+   :overflow                :hidden})
 
 (defn sheet-content
   [{:keys [theme padding-bottom shell?]}]

src/status_im/common/bottom_sheet/view.cljs

@@ -133,12 +133,13 @@
                 {:transform [{:translateY translate-y}]}
                 (style/sheet {:max-height sheet-max-height}))}
        (when shell?
+         [rn/view {:style style/shell-bg-container}
           [blur/ios-view
-          {:style         style/shell-bg
+           {:style         (style/shell-bg blur-background)
             :blur-radius   (or blur-radius 20)
             :blur-amount   32
             :blur-type     :transparent
-           :overlay-color :transparent}])
+            :overlay-color :transparent}]])
        (when selected-item
          [rn/view
           {:on-layout handle-item-height