Removed legacy Children Composable API

[arkivanov]

Summary by CodeRabbit

• Breaking Changes
  • Removed the stack animation and predictive back transition APIs.
  • Stack-based child rendering now uses updated signatures, so existing animation integrations may need code changes.
  • Page transition callback signatures were also adjusted.

[coderabbitai]

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly describes the main change: removing the legacy Children composable API.

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 07-03-removed_legacy_children_composable_api

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[arkivanov]

• Merge extensions-compose-experimental module into extensions-compose #1008
• Removed legacy Children Composable API #1007 👈 (View in Graphite)
• Migrated samples from Children to ChildStack #1006
• Removed unnecessary ExperimentalDecomposeApi annotation from samples #1005
• Removed ExperimentalDecomposeApi annotation from predictive back gesture API #1004
• Removed ExperimentalDecomposeApi annotation from all API in extensions-compose-experimental #1003
• v4

This stack of pull requests is managed by Graphite. Learn more about stacking.

[arkivanov]

Merge activity

• Jul 3, 11:06 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Jul 3, 11:15 PM UTC: The Graphite merge of this pull request was cancelled.
• Jul 3, 11:20 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Jul 3, 11:22 PM UTC: @arkivanov merged this pull request with Graphite.