[FIX] Attachments not rendered if deployed on subfolder (#22290)

Co-authored-by: Tasso Evangelista <tasso.evangelista@rocket.chat>

app/utils/lib/getURL.js

@@ -54,7 +54,7 @@ export const _getURL = (path, { cdn, full, cloud, cloud_route, cloud_params, _cd
 	}
 
 	if (full) {
-		return siteUrl + url;
+		return s.rtrim(siteUrl, pathPrefix) + url;
 	}
 
 	return url;

client/components/Message/Attachments/Files/ImageAttachment.tsx

@@ -51,7 +51,7 @@ export const ImageAttachment: FC<ImageAttachmentProps> = ({
 						{...imageDimensions}
 						loadImage={loadImage}
 						setLoadImage={setLoadImage}
-						src={url}
+						src={getURL(url)}
 						previewUrl={`data:image/png;base64,${imagePreview}`}
 					/>
 				</Attachment.Content>

client/providers/AvatarUrlProvider.tsx

@@ -1,6 +1,7 @@
 import React, { useMemo, FC } from 'react';
 
 import { roomTypes } from '../../app/utils/client';
+import { getURL } from '../../app/utils/lib/getURL';
 import { AvatarUrlContext } from '../contexts/AvatarUrlContext';
 import { useSetting } from '../contexts/SettingsContext';
 
@@ -19,7 +20,7 @@ const AvatarUrlProvider: FC = ({ children }) => {
 						`${cdnAvatarUrl}/avatar/${uid}${etag ? `?etag=${etag}` : ''}`;
 				}
 				return (uid: string, etag?: string): string =>
-					`/avatar/${uid}${etag ? `?etag=${etag}` : ''}`;
+					getURL(`/avatar/${uid}${etag ? `?etag=${etag}` : ''}`);
 			})(),
 			getRoomPathAvatar: ({ type, ...room }: any): string =>
 				roomTypes.getConfig(type || room.t).getAvatarPath({ username: room._id, ...room }),