fix(firebase_dynamic_links): Properly type cast utmParameters coming from native side.

[odlund]

Description

The PendingDynamicLinkData constructs expects the parameter utmParams to be a Map<String, String> but was passed a Map<dynamic,dynamic> this silently fails with a typecast exception and deep links seems to just not show up in the flutter app.

Related Issues

fixes #8261

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• My PR includes unit or integration tests for all changed/updated/fixed behaviors (See Contributor Guide).
• All existing and new tests are passing.
• I updated/added relevant documentation (doc comments with ///).
• The analyzer (melos run analyze) does not report any problems on my PR.
• I read and followed the Flutter Style Guide.
• I signed the CLA.
• I am willing to follow-up on review comments in a timely manner.

Breaking Change

Does your PR require plugin users to manually update their apps to accommodate your change?

• Yes, this is a breaking change.
• No, this is not a breaking change.

[nilsreichardt]

@russellwheatley It seems so that the current version (4.10.0) of firebase_dynamic_links doesn't work. I'm not able to receive dynamic links with onLink. I haven't tested it yet, but other users complaining that getInitialLink also not working (see #8261).

With the PR of @odlund, it's working again.

It would be nice to have (integration) tests which catch these kinds of issues. Otherwise, almost the entire packing isn't working anymore.

[crushman1]

this issue is happening on firebase_dynamic_links: ^4.0.7 as well. it says type '_InternalLinkedHashMap<Object?, Object?>' is not a subtype of type 'Map<String, String>' when it gets data in not null in final PendingDynamicLinkData? data = await FirebaseDynamicLinks.instance.getInitialLink();

[scott-the-brewer]

I can confirm this works for me. Thanks @odlund

[russellwheatley]

Thank you for the PR 🙏.

[russellwheatley]

@odlund Thank you for PR, but I've opened a new one here given it needs to be merged and released ASAP. I tried to push to your repo but no write permission apparently. Thanks again!

[odlund]

@russellwheatley Thanks!