Exclude completions of binding pattern variable initializers

[Vitaly (zardoy)]

Fixes #53049

const {a1} = a/* should not complete a1 */

Real world case:

let pageToReturn

const { data: pageData } = await octokit.repos.listTags({
    page: page /* pageData is suggested first */
})

Some kind of follow up for #42087

Decided to build on top of #52690 (so there is no conflicts if gets merged)

For now will wait until that PR is merged.

[Nathan Shively-Sanders (sandersn)]

New changes require approval from someone other than sandersn because they were the last pusher.

well this is annoying

[Vitaly (zardoy)]

Thank you! You are the best!