Admit rich computed delete keys in unified bytecode

[rogeralsing]

Summary

• admit computed property deletes with supported multi-op key spans, e.g. delete box.child[left + right]
• keep unresolved computed delete keys declined as DynamicLookupDependency
• update the unified bytecode contract and production tests for the widened delete lane

Tests

• rtk dotnet test tests/Asynkron.JsEngine.Tests -c Release --filter "FullyQualifiedNameUnifiedBytecodeProductionEligibilityTests.Evaluate_NestedComputedPropertyDeleteRichKeyCandidate_AcceptsOwnedPropertyOpcodes|FullyQualifiedNameUnifiedBytecodeProductionEligibilityTests.Evaluate_NestedComputedPropertyDeleteUnsupportedKey_DeclinesBeforeVm|FullyQualifiedNameUnifiedBytecodeProductionInvocationTests.NestedNamedReceiverComputedPropertyDeleteRichKey_UsesUnifiedBytecodeProductionFastPath|FullyQualifiedNameUnifiedBytecodeProductionInvocationTests.NestedNamedReceiverComputedPropertyDelete_UsesUnifiedBytecodeProductionFastPathAndKeySemantics|FullyQualifiedName~ExpressionProgramCoverageMapTests.UnifiedBytecodeExpansionContract_ListsRequiredHeadingsAndCurrentEnums"
• rtk dotnet test tests/Asynkron.JsEngine.Tests -c Release --filter "FullyQualifiedNameUnifiedBytecodeProductionEligibilityTests|FullyQualifiedNameUnifiedBytecodeProductionInvocationTests|FullyQualifiedNameExpressionProgramLoweringTests|FullyQualifiedNameExpressionProgramCoverageMapTests|FullyQualifiedName~DeleteOperatorTests"
• rtk dotnet build src/Asynkron.JsEngine/Asynkron.JsEngine.csproj -c Release
• rtk rg "EvaluateExpression(|ProfileEvaluateExpression(" src/Asynkron.JsEngine/Ast/TypedAstEvaluator.ExecutionPlanRunner*
• rtk git diff --check

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