[fix] bilibili engine - ValueError in duration & HTML in title

- ValueError in duration: issue reported in #3799
- HTML in title: related to #3770

[#3799] https://github.com/searxng/searxng/issues/3799
[#3770] https://github.com/searxng/searxng/pull/3770

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

searx/engines/bilibili.py

@@ -9,6 +9,8 @@ import string
 from urllib.parse import urlencode
 from datetime import datetime, timedelta
 
+from searx import utils
+
 # Engine metadata
 about = {
     "website": "https://www.bilibili.com",
@@ -56,6 +58,8 @@ def request(query, params):
 
 # Format the video duration
 def format_duration(duration):
+    if not ":" in duration:
+        return None
     minutes, seconds = map(int, duration.split(":"))
     total_seconds = minutes * 60 + seconds
 
@@ -70,7 +74,7 @@ def response(resp):
     results = []
 
     for item in search_res.get("data", {}).get("result", []):
-        title = item["title"]
+        title = utils.html_to_text(item["title"])
         url = item["arcurl"]
         thumbnail = item["pic"]
         description = item["description"]