[cleanup] Misc (#15430)

Authored by: bashonly, Grub4K, seproDev

Co-authored-by: sepro <sepro@sepr0.com>
Co-authored-by: Simon Sawicki <contact@grub4k.dev>

yt_dlp/extractor/tarangplus.py

@@ -11,6 +11,7 @@ from ..utils import (
     OnDemandPagedList,
     clean_html,
     extract_attributes,
+    url_or_none,
     urljoin,
 )
 from ..utils.traversal import (
@@ -128,7 +129,7 @@ class TarangPlusVideoIE(TarangPlusBaseIE):
             **traverse_obj(metadata, {
                 'id': ('content_id', {str}),
                 'title': ('title', {str}),
-                'thumbnail': ('image', {str}),
+                'thumbnail': ('image', {url_or_none}),
             }),
             **traverse_obj(hidden_inputs_data, {
                 'id': ('content_id', {str}),