[emulator] Return a reference, not a raw pointer, from LLILEmulator::GetView

The view member is reference counted; returning a raw BinaryView* from a public
getter invites use-after-free if the emulator outlives the caller's assumptions.
Return Ref<BinaryView> so callers hold their own reference.

Addresses emesare review comment on PR #8314.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: xusheng6

plugins/emulator/core/llilemulator.h

@@ -201,6 +201,6 @@ namespace BinaryNinjaEmulator
 		// State serialization
 		std::string SaveState() const;
 		bool LoadState(const std::string& json, BinaryNinja::BinaryView* view);
-		BinaryNinja::BinaryView* GetView() const { return m_view; }
+		BinaryNinja::Ref<BinaryNinja::BinaryView> GetView() const { return m_view; }
 	};
 }