chore: make imageContainerStyle theme compliant (#2950)

Author: isekovanic

package/src/components/Attachment/Gallery.tsx

@@ -293,7 +293,14 @@ const GalleryThumbnail = <
     theme: {
       colors: { overlay },
       messageSimple: {
-        gallery: { image, imageBorderRadius, imageContainer, moreImagesContainer, moreImagesText },
+        gallery: {
+          image,
+          imageBorderRadius,
+          imageContainer,
+          imageContainerStyle,
+          moreImagesContainer,
+          moreImagesText,
+        },
       },
     },
   } = useTheme();
@@ -383,7 +390,7 @@ const GalleryThumbnail = <
           thumb_url={thumbnail.thumb_url}
         />
       ) : (
-        <View style={styles.imageContainerStyle}>
+        <View style={[styles.imageContainerStyle, imageContainerStyle]}>
           <GalleryImageThumbnail
             borderRadius={imageBorderRadius ?? borderRadius}
             ImageLoadingFailedIndicator={ImageLoadingFailedIndicator}

package/src/contexts/themeContext/utils/theme.ts

@@ -571,6 +571,7 @@ export type Theme = {
       gridWidth: number;
       image: ImageStyle;
       imageContainer: ViewStyle;
+      imageContainerStyle: ViewStyle;
       maxHeight: number;
       maxWidth: number;
       minHeight: number;
@@ -1354,6 +1355,7 @@ export const defaultTheme: Theme = {
       image: {},
       imageBorderRadius: undefined,
       imageContainer: {},
+      imageContainerStyle: {},
       maxHeight: 300,
       maxWidth: 256,
       minHeight: 100,