Support running DromaeoBenchmark with modern JS syntax

[lahma]

Modern syntax with let and const etc will create extra stress due to lexical scope building requirements.

[lahma]

BenchmarkDotNet v0.14.0, Windows 11 (10.0.26100.2894)
12th Gen Intel Core i9-12900H, 1 CPU, 20 logical and 14 physical cores
.NET SDK 9.0.102
  [Host]     : .NET 8.0.12 (8.0.1224.60305), X64 RyuJIT AVX2
  Job-XAOGDZ : .NET 8.0.12 (8.0.1224.60305), X64 RyuJIT AVX2

InvocationCount=1  UnrollFactor=1  

Method	Modern	Prepared	Mean	Error	StdDev	Gen0	Gen1	Gen2	Allocated
CoreEval	False	False	4.068 ms	0.1638 ms	0.4455 ms	-	-	-	332.45 KB
CoreEval	False	True	4.218 ms	0.1067 ms	0.2810 ms	-	-	-	317.23 KB
CoreEval	True	False	3.256 ms	0.1077 ms	0.2799 ms	-	-	-	331.7 KB
CoreEval	True	True	3.172 ms	0.1210 ms	0.3167 ms	-	-	-	316.74 KB
Cube	False	False	16.714 ms	0.3312 ms	0.7677 ms	-	-	-	6250.12 KB
Cube	False	True	16.146 ms	0.3059 ms	0.4387 ms	-	-	-	5910.48 KB
Cube	True	False	16.127 ms	0.3179 ms	0.6978 ms	-	-	-	5944.41 KB
Cube	True	True	16.022 ms	0.3172 ms	0.5638 ms	-	-	-	5606.74 KB
ObjectArray	False	False	31.216 ms	0.6187 ms	0.7365 ms	7000.0000	-	-	96270.18 KB
ObjectArray	False	True	31.987 ms	0.6282 ms	0.9402 ms	7000.0000	-	-	96222.8 KB
ObjectArray	True	False	36.931 ms	0.7377 ms	0.8496 ms	9000.0000	1000.0000	-	111437.21 KB
ObjectArray	True	True	36.716 ms	0.7091 ms	0.9706 ms	9000.0000	-	-	111391.23 KB
ObjectRegExp	False	False	132.868 ms	2.3613 ms	4.8234 ms	14000.0000	11000.0000	10000.0000	153215.53 KB
ObjectRegExp	False	True	105.943 ms	2.7367 ms	7.9832 ms	14000.0000	11000.0000	10000.0000	151153.23 KB
ObjectRegExp	True	False	164.125 ms	5.8612 ms	17.1898 ms	14000.0000	10000.0000	9000.0000	165805.87 KB
ObjectRegExp	True	True	132.404 ms	5.7032 ms	16.7265 ms	15000.0000	11000.0000	10000.0000	162341.12 KB
ObjectString	False	False	269.713 ms	6.6076 ms	18.8519 ms	76000.0000	67000.0000	65000.0000	1315871.17 KB
ObjectString	False	True	263.740 ms	8.1845 ms	24.1321 ms	76000.0000	66000.0000	65000.0000	1315776.89 KB
ObjectString	True	False	2,643.371 ms	41.0461 ms	34.2753 ms	1172000.0000	995000.0000	993000.0000	20821965.16 KB
ObjectString	True	True	2,681.304 ms	46.7419 ms	43.7224 ms	1207000.0000	1030000.0000	1028000.0000	20821155.7 KB
StringBase64	False	False	34.178 ms	0.6768 ms	1.2877 ms	-	-	-	2397.97 KB
StringBase64	False	True	33.496 ms	0.6048 ms	0.7864 ms	-	-	-	2297.89 KB
StringBase64	True	False	39.968 ms	0.7882 ms	1.3805 ms	1000.0000	-	-	15113.2 KB
StringBase64	True	True	40.720 ms	0.8086 ms	1.3286 ms	1000.0000	-	-	15013.62 KB