dateToLocaleISOString is returning an invalid value

[compulim]

Is it an issue related to Adaptive Cards?

No

Is this an accessibility issue?

No

What version of Web Chat are you using?

Latest production

Which distribution are you using Web Chat from?

Bundle (webchat.js)

Which hosting environment does this issue primarily affect?

Web apps

Which browsers and platforms do the issue happened?

Browser: Edge (latest), Browser: Chrome (latest), Browser: Firefox (latest), Browser: Safari (latest), Browser: IE Mode (latest), Platform: Windows, Platform: macOS, Platform: iOS/iPadOS, Platform: Android

Which area does this issue affect?

Others or unrelated

What is the public URL for the website?

No response

Please describe the bug

In some environments (timezone with 30 minutes offset), the dateToLocaleISOString return an invalid value of "2024-03-01T09:37:32.086-03:-30". Probably something around https://github.com/microsoft/BotFramework-WebChat/blob/main/packages/core/src/utils/dateToLocaleISOString.ts#L51.

We build this function because the built-in Date.prototype.toISOString() always return UTC and does not contains timezone information.

Do you see any errors in console log?

No response

How to reproduce the issue?

(TBD)

What do you expect?

The function returns '2024-03-01T09:37:32.086-03:30'.

What actually happened?

The function returns '2024-03-01T09:37:32.086-03:-30'.

Do you have any screenshots or recordings to repro the issue?

No response

Adaptive Card JSON

No response

Additional context

Related to ticket 477126826.