ssb: Enough plumbing that if a blob is received, we will try to load the image again.

apps/ssb/tf-app.js

@@ -65,6 +65,17 @@ class TfElement extends LitElement {
 		tfrpc.register(async function notifyNewMessage(id) {
 			await self.fetch_new_message(id);
 		});
+		tfrpc.register(async function notifyNewBlob(id) {
+			window.dispatchEvent(
+				new CustomEvent('blob-stored', {
+					bubbles: true,
+					composed: true,
+					detail: {
+						id: id,
+					},
+				})
+			);
+		});
 		tfrpc.register(function set(name, value) {
 			if (name === 'broadcasts') {
 				self.broadcasts = value;