Update telemetry state for search model only if one is found, fix alt text for language setting

src/khoj/interface/web/config.html

@@ -109,7 +109,7 @@
             </div>
             <div class="card">
                 <div class="card-title-row">
-                    <img class="card-icon" src="/static/assets/icons/web.svg" alt="Chat">
+                    <img class="card-icon" src="/static/assets/icons/web.svg" alt="Language">
                     <h3 class="card-title">
                         Language
                     </h3>

src/khoj/routers/api.py

@@ -343,16 +343,16 @@ async def update_search_model(
 
     new_config = await adapters.aset_user_search_model(user, int(id))
 
-    update_telemetry_state(
-        request=request,
-        telemetry_type="api",
-        api="set_search_model",
-        client=client,
-        metadata={"search_model": new_config.setting.name},
-    )
-
     if new_config is None:
         return {"status": "error", "message": "Model not found"}
+    else:
+        update_telemetry_state(
+            request=request,
+            telemetry_type="api",
+            api="set_search_model",
+            client=client,
+            metadata={"search_model": new_config.setting.name},
+        )
 
     return {"status": "ok"}