Allow to use post-fix expression operator "!" in object destructuring

[Ky6uk]

It's much convenient way to use post-fix operator "!" with object destructuring as

const { a!, b!, c! } = data;

instead of

const a = data.a!;
const b = data.b!;

data.c!();

because later in code we can use new variables many times and right now it required to use operator ! for each usage of the variable in case when strictNullChecks is enabled.

[ghost]

Duplicate of #17390

[typescript-bot]

This issue has been marked as a duplicate and has seen no activity in the last day. It has been closed for automatic house-keeping purposes.