[RU]MangaLib fix cloudflare errors

[e-shl]

Minimize rateLimit chapter update and removing outdated unnecessary User-Agent
Closes #6601
Checklist:

• Updated extVersionCode value in build.gradle for individual extensions
• Updated overrideVersionCode or baseVersionCode as needed for all multisrc extensions
• Referenced all related issues in the PR body (e.g. "Closes #xyz")
• Added the isNsfw = true flag in build.gradle when appropriate
• Have not changed source names
• Have explicitly kept the id if a source's name or language were changed
• Have tested the modifications by compiling and running the extension through Android Studio
• Have removed web_hi_res_512.png when adding a new extension

[MikeCruzer]

Скачал последнее расширение мангалиба с бусти, работает, но через раз выскакивает с этой ошибкой.

User-agent стоит гугловский

App version: 0.15.3 (standard, a9c7cbf, 119, 2024-01-13T19:03Z)
Android version: 13 (SDK 33; build TKQ1.221013.002 test-keys)
Device brand: nubia
Device manufacturer: nubia
Device name: NX679J-EEA (NX679J-EEA)
Device model: NX679J
WebView: Android System WebView 131.0.6778.104

--------- beginning of main
12-16 13:42:30.852 7510 7510 E anade.tachiyomi: Not starting debugger since process cannot load the jdwp agent.
12-16 13:42:30.971 7510 7563 E chromium: [1216/134230.971458:ERROR:variations_seed_loader.cc(39)] Seed missing signature.
12-16 13:42:31.363 7510 7553 E SQLiteLog: (284) automatic index on C(manga_id)
12-16 13:42:31.363 7510 7553 E SQLiteLog: (284) automatic index on mangas_categories(manga_id)
12-16 13:43:12.384 8211 8211 E i:error_handler: Not starting debugger since process cannot load the jdwp agent.
12-16 13:43:12.458 8211 8238 E SQLiteLog: (283) recovered 164 frames from WAL file /data/data/eu.kanade.tachiyomi/databases/tachiyomi.db-wal
12-16 13:43:13.449 8479 8479 E anade.tachiyomi: Not starting debugger since process cannot load the jdwp agent.
--------- beginning of system
12-16 13:43:13.473 8479 8479 E ActivityThread: two prestart wait!8479,10254, wait before app application onCreate=true
12-16 13:43:14.570 8479 8512 E SQLiteLog: (5) statement aborts at 2: [PRAGMA journal_mode=TRUNCATE] database is locked
12-16 13:43:14.611 8479 8524 E chromium: [1216/134314.611503:ERROR:variations_seed_loader.cc(39)] Seed missing signature.
12-16 13:43:14.923 8479 8512 E SQLiteLog: (284) automatic index on C(manga_id)
12-16 13:43:14.923 8479 8512 E SQLiteLog: (284) automatic index on mangas_categories(manga_id)

[e-shl]

0.15.3

Update tachi