RFR: 8336777: BufferedMethodBuilder not initialized with static flag

[Adam Sotona]

On Thu, 18 Jul 2024 22:21:08 GMT, Chen Liang <liach at openjdk.org> wrote:

> `BufferedMethodBuilder` accepts a static flag and passes it to the `CodeBuilder` it creates; yet it does not prevent static flag tampering like `DirectMethodBuilder` does. This patch makes their behaviors consistent.
> 
> Note that the throwing of IAE is provisional; it is open to discussion later.

Looks good to me.

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Marked as reviewed by asotona (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/20244#pullrequestreview-2188235046