Internal: b/269139224

Is there an existing issue for this?

• I have searched the existing issues
• I have read the guide to filing a bug

Steps to reproduce

1. Click on the ExpansionTile component with text "xxx" with accessibility mode enabled. Then, it will read like "xxx, Expanded double tap to collapse" or "xxx, Collapsed double tap to expand".
2. Double click on the ExpansionTile component, then immediately it will only read "xxx", but the expected words are "xxx Expanded" or "xxx Collapsed"
3. Note if you single click on the ExpansionTile component it will still read out the output described in step 1 as expected. The only issue is just at step 2, when user finishes the double clicking.

It seems that this issue has been fixed by #74963, but reverted by #121699 with a new solution introduced. In the final video shown by #121699, this issue exists. Furthermore, the error seems to be that "Expanded" and "Collapsed" hints are interrupted when being announced. Related issue --> #122101. One solution might be delaying the announcement.

Expected results

When double clicked, the ExpansionTile component should read out "xxx Expanded" or "xxx Collapsed".

Actual results

When double clicked, the ExpansionTile component only reads out "xxx".

Code sample

ExpansionTile(
tilePadding: EdgeInsets.zero,
title: Text("xxx"),
expandedAlignment: Alignment.topLeft,
childrenPadding: const EdgeInsetsDirectional.only(
start: 48,
top: 12,
end: 0,
bottom: 12,
),
children: [],
)

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