2.8: NodeDB shrink, decoupling, and restructuring (#10413)

* 2.8: NodeDB refactor to decouple satellite entries and decrease size

* Regen

* Refactor node mute handling to use dedicated functions for clarity and consistency

* Develop ref

* Fix NodeDB review follow-ups

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* Address review validation nits

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* Trunk

* Potential fix for pull request finding

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* Extract legacy NodeDatabase migration

* Fix remaining NodeDB review issues

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* Fixes

* Trunk

* Fix latest review compile follow-ups

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* Fix cppcheck style warnings

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* Change pointer type for mesh node in set_favorite function

* Change pointer types for mesh node references to const in multiple applets

* Add NodeDB layout v25 documentation and migration guidelines

* Remove tests for uninitialized PacketHistory state due to undefined behavior

* Fix code block formatting in copilot instructions

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src/modules/ExternalNotificationModule.cpp

@@ -372,7 +372,7 @@ ProcessMessage ExternalNotificationModule::handleReceived(const meshtastic_MeshP
             // If we receive a direct message and the receipent is us, apply DM mute setting
             // Else we just handle it as not muted.
             const bool isDmToUs = !isBroadcast(mp.to) && isToUs(&mp);
-            bool is_muted = isDmToUs ? (sender && ((sender->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) != 0))
+            bool is_muted = isDmToUs ? nodeInfoLiteIsMuted(sender)
                                      : (ch.settings.has_module_settings && ch.settings.module_settings.is_muted);
 
             const bool buzzerModeIsDirectOnly =