buffer: isUtf8 and isAscii accept detached TypedArray views

### Version latest main branch ### Platform ```text 7.1.2-arch3-1 ``` ### Subsystem buffer ### What steps will reproduce the bug? ```js const { isUtf8, isAscii } = require('node:buffer'); const view = new Uint8Array([0xff]); structuredClone(view.buffer, { transfer: [view.buffer] }); console.log(isUtf8(view)); console.log(isAscii(view)); ``` ### How often does it reproduce? Is there a required condition? ArrayBufferViewContents reads the view's zero byte length but does not record the detached state of its backing ArrayBuffer. ### What is the expected behavior? Why is that the expected behavior? Both functions should throw ERR_INVALID_STATE, consistent with passing a detached ArrayBuffer directly. ### What do you see instead? Both functions return true. ### Additional information