[MM-55053] Use request-specific logger in channels/app/file.go (#25037)

server/channels/api4/post.go

@@ -1145,7 +1145,7 @@ func getFileInfosForPost(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	infos, appErr := c.App.GetFileInfosForPostWithMigration(c.Params.PostId, includeDeleted)
+	infos, appErr := c.App.GetFileInfosForPostWithMigration(c.AppContext, c.Params.PostId, includeDeleted)
 	if appErr != nil {
 		c.Err = appErr
 		return