Steps to reproduce

1. Create a text view, marked as header:

Semantics(
  header: true,
  child: Text('Descriptive header')
);

2. Install on Android device
3. Navigate to the text view using TalkBack

This commit: 59d8010 has changed the logic for setting the isHeading property.

result.setHeading(semanticsNode.hasFlag(Flag.IS_HEADER)); was replaced by result.setHeading(semanticsNode.headingLevel > 0); without a fallback.

Expected behavior would be to set isHeading to true if Flag.IS_HEADER OR headingLevel > 0.

Expected results

TalkBack should announce the text view as header.

Actual results

TalkBack does not announce is header.

Code sample

Semantics(
  header: true,
  child: Text('Descriptive header')
);

Screenshots or Video

The isHeading property is false in the accessibility tree.

Logs

N/A

Flutter Doctor output

N/A