Partially revert #41044, restoring parameter destructurings in d.ts files

[jakebailey]

Fixes #50707 (at least to the extent that we have the pre-4.8 behavior).

In a followup PR, I can remove these destructurings/bindings/whatevertheyrecalleds in the declaration emitter.

Note that the new errors added in #41044 remain. I guess the PR had two somewhat-related changes in it?

[jakebailey]

@typescript-bot cherry-pick this to release-4.8

Technically, this depends on #50538 but I'm curious to see if it'll work. Probably not.

[typescript-bot]

Heya @jakebailey, I've started to run the task to cherry-pick this into release-4.8 on this PR at ba4a466. You can monitor the build here.

[typescript-bot]

Hey @jakebailey, I couldn't open a PR with the cherry-pick. (You can check the log here). You may need to squash and pick this PR into release-4.8 manually.

[andrewbranch]

@typescript-bot cherry-pick this to release-4.8

[typescript-bot]

Heya @andrewbranch, I've started to run the task to cherry-pick this into release-4.8 on this PR at ba4a466. You can monitor the build here.

[typescript-bot]

Hey @andrewbranch, I couldn't open a PR with the cherry-pick. (You can check the log here). You may need to squash and pick this PR into release-4.8 manually.