refactor(telegram): extract ingest/media/batching/reactions clusters into 9 s5 mixins (tracker #78791)

[andrexibiza]

Related #78791 #78792 #75742 #75747 #78721 #78722 #78723 #78724 #78725 #78726 #78727 #78728 #78729 #78731 #78732 #78733 #78734 #78735 #78736 #78737 #78738 #78739 #78740 #78741 #78742 #78743 #78744 #78745 #78746 #78747 #78748 #78749 #78750 #78751 #78752 #78753 #78754 #78755 #78756 #78757 #78758 #78759 #78760 #78761 #78762 #78763 #78764 #78765 #78766 #78767 #78768 #78769 #78770 #78771 #78772 #78773 #78774 #78775 #78776 #78777 #78778 #78779 #78780 #78781 #78782 #78783 #78784 #78785 #78786 #78787 #78788 #78789 #78790
extract s5 ingest/media clusters into mixin modules (tracker #78791):Verbatim extraction of 45 methods into 9 mixin modules. Wave-2/3 VERIFIED; 544/544 full telegram suite, zero baseline deltas.

Interlock (bidirectional v2)

This PR is linked both ways:

• Epic Telegram Feature Parity & Alignment Campaign (Bot API 10.2) — meta-issue #78791 (master meta-lock — its interlock table lists this PR)
• Decomp plan feat(telegram): adapter.py god-file decomposition plan (six-wave cluster map) #78792 (commented with this PR)
• Precedent extractions refactor(telegram): extract authorization cluster into TelegramAuthorizationMixin #75742, refactor(state): extract Telegram topic cluster into SessionTelegramTopicsMixin #75747 (same decomposition effort)
• Campaign issues feat(telegram): support paid broadcasts (allow_paid_broadcast) on send paths #78689-feat(telegram): setMyDefaultAdministratorRights/getMyDefaultAdministratorRights #78790 (each commented with this PR set)

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