fix(compiler-cli): use @ts-ignore.

[mprobst]

The previous commit 2e1ddde used @ts-expect-error to suppress the current error, with the intent of being informed once that's no longer an error, ie. when we updated to an upstream TS version that includes this change.

However this unfortunately means the change is incompatible with the fixed version, which prevents it from working with an updated TS version in google3.

This change reverts back to the original @ts-ignore which is forwards and backwards compatible, avoiding that problem (but unfortunately losing the benefit of being notified once fixed).

This is a follow up to PR #47585.

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular/blob/main/CONTRIBUTING.md#commit

PR Type

• Bugfix

What is the current behavior?

See above.

Does this PR introduce a breaking change?

• Yes
• No

[crisbeto]

LGTM

[ngbot]

I see that you just added the action: merge label, but the following checks are still failing:
     status "google3" is failing
     status "ci/angular: size" is pending

If you want your PR to be merged, it has to pass all the CI checks.

If you can't get the PR to a green state due to flakes or broken main, please try rebasing to main and/or restarting the CI job. If that fails and you believe that the issue is not due to your change, please contact the caretaker and ask for help.

[AndrewKushnir]

Merge-assistance: the size test failure is unrelated and likely a flake. This PR is ready for merge.

[jessicajaniuk]

This PR was merged into the repository by commit 19ad498.

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