`using` statements aren't allowed in script-block literals, but are in script blocks created with `[scriptblock]::Create()`

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Steps to reproduce

• using statements are disallowed in script-block literals, whereas
• source code passed to [scriptblock]::Create() permits them.

I don't if there's a good reason not to allow them - at least a first glance, they seem to work as intended - but the inconsistency is worth resolving either way.

# Define a snippet of source code as  a string.
$sbText = 'using namespace System.Collections; [ArrayList]'

# OK script block created from string via [scriptblock]::Create()
& ([scriptblock]::Create($sbText))

# !! BROKEN: A script block *literal* with the same source code
# !!         doesn't permit `using` statements.
Invoke-Expression "& { $sbText }"

Expected behavior

Both script-block calls should succeed and output the [System.Collections.ArrayList] type.

Actual behavior

The 2nd call, based on a script-block literal, fails with A 'using' statement must appear before any other statements in a script.

Error details

No response

Environment data

PowerShell 7.4.0-preview.4

Visuals

No response

首先复现 issue 中的两个示例：一个脚本块字面量，以及一个使用 [scriptblock]::Create() 创建的脚本块。比较它们各自如何处理 using 语句，并确定是否应使它们的行为保持一致。完成的标准是文档中的示例相互一致，并且预期的 ArrayList 类型输出能够成功生成且不出现顺序错误。