emulator: drop redundant string wrap around GetShortName

Addresses review feedback: Symbol::GetShortName already returns a
std::string, so the explicit std::string(...) construction is redundant.

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

Author: xusheng6

plugins/emulator/core/llilemulator.cpp

@@ -2227,7 +2227,7 @@ std::string LLILEmulator::ResolveCallTargetName(uint64_t addr)
 	BNSymbolType type = sym->GetType();
 	if (type == ImportedFunctionSymbol || type == FunctionSymbol
 		|| type == LibraryFunctionSymbol || type == ExternalSymbol)
-		return std::string(sym->GetShortName());
+		return sym->GetShortName();
 
 	return "";
 }