ssb: Avoid showing a broken img when viewing a profile without one assigned.

apps/ssb/tf-profile.js

@@ -248,7 +248,14 @@ class TfProfileElement extends LitElement {
 				<div style="display: flex; flex-direction: row; gap: 1em">
 					${edit_profile}
 					<div style="flex: 1 0 50%">
-						<div><img src=${'/' + image + '/view'} style="width: 256px; height: auto"></img></div>
+						${
+							image
+								? html`<div><img src=${'/' + image + '/view'} style="width: 256px; height: auto"></img></div>`
+								: html`<div>
+										<div class="w3-jumbo">😎</div>
+										<div><i>Profile image not set.</i></div>
+									</div>`
+						}
 						<div>${unsafeHTML(tfutils.markdown(description))}</div>
 					</div>
 				</div>