Description

This removes the deprecated showDialog.child parameter that has reached the EOL . The builder property should be used instead.

Part of deprecations that are slated for removal for next release in https://flutter.dev/go/deprecation-lifetime

More context: https://medium.com/flutter/deprecation-lifetime-in-flutter-e4d76ee738ad

Related Issues

Deprecated in #15303

Tests

Tests for quick fix tool.

Checklist

Before you create this PR, confirm that it meets all requirements listed below by checking the relevant checkboxes ([x]). This will ensure a smooth and quick review process.

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I signed the CLA.
• I read and followed the Flutter Style Guide, including Features we expect every widget to implement.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I updated/added relevant documentation (doc comments with ///).
• All existing and new tests are passing.
• The analyzer (flutter analyze --flutter-repo) does not report any problems on my PR.
• I am willing to follow-up on review comments in a timely manner.

Breaking Change

Did any tests fail when you ran them? Please read Handling breaking changes.

• No, no existing tests failed, so this is not a breaking change.