[Bilibili] failure to download whole channels videos

[zhicai]

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• I understand that I will be blocked if I intentionally remove or skip any mandatory* field

Checklist

• I'm reporting that yt-dlp is broken on a supported site
• I've verified that I have updated yt-dlp to nightly or master (update instructions)
• I've checked that all provided URLs are playable in a browser with the same IP and same login details
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched known issues and the bugtracker for similar issues including closed ones. DO NOT post duplicates
• I've read the guidelines for opening an issue
• I've read about sharing account credentials and I'm willing to share it if required

Region

China

Provide a description that is worded well enough to be understood

Download whole channels videos failed, but download single one is OK.

Provide verbose output that clearly demonstrates the problem

• Run your yt-dlp command with -vU flag added (yt-dlp -vU <your command line>)
• If using API, add 'verbose': True to YoutubeDL params instead
• Copy the WHOLE output (starting with [debug] Command-line config) and insert it below

Complete Verbose Output

./yt-dlp_linux -Uv --cookies-from-browser firefox https://space.bilibili.com/68412710 
[debug] Command-line config: ['-Uv', '--cookies-from-browser', 'firefox', 'https://space.bilibili.com/68412710']
[debug] Encodings: locale UTF-8, fs utf-8, pref UTF-8, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version nightly@2024.05.08.232715 from yt-dlp/yt-dlp-nightly-builds (linux_exe)
[debug] Python 3.11.9 (CPython x86_64 64bit) - Linux-6.8.0-31-generic-x86_64-with (OpenSSL 3.1.4 24 Oct 2023)
[debug] exe versions: ffmpeg 6.1.1 (setts), ffprobe 6.1.1
[debug] Optional libraries: Cryptodome-3.20.0, brotli-1.1.0, certifi-2024.02.02, mutagen-1.47.0, requests-2.31.0, secretstorage-3.3.3, sqlite3-3.44.2, urllib3-2.2.1, websockets-12.0
[debug] Proxy map: {'https': 'http://127.0.0.1:1081', 'http': 'http://127.0.0.1:1081'}
Extracting cookies from firefox
[debug] Extracting cookies from: "/home/xia/snap/firefox/common/.mozilla/firefox/f8edbslu.default/cookies.sqlite"
Extracted 1836 cookies from firefox
[debug] Request Handlers: urllib, requests, websockets
[debug] Loaded 1810 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
Latest version: nightly@2024.05.08.232715 from yt-dlp/yt-dlp-nightly-builds
yt-dlp is up to date (nightly@2024.05.08.232715 from yt-dlp/yt-dlp-nightly-builds)
[BilibiliSpaceVideo] Extracting URL: https://space.bilibili.com/68412710
[BilibiliSpaceVideo] A channel URL was given. Only the channel's videos will be downloaded. To download audios, add a "/audio" to the URL
[BilibiliSpaceVideo] 68412710: Downloading JSON metadata
[BilibiliSpaceVideo] 68412710: Downloading page 0
ERROR: [BilibiliSpaceVideo] 68412710: Request is blocked by server (412), please add cookies, wait and try later.
  File "yt_dlp/extractor/common.py", line 734, in extract
  File "yt_dlp/extractor/bilibili.py", line 1072, in _real_extract
  File "yt_dlp/extractor/bilibili.py", line 974, in _extract_playlist
  File "yt_dlp/extractor/bilibili.py", line 1051, in fetch_page