feat: include enabled, selected and hasFocus in json ui dump

[gmegidish]

The json format of device.dump.ui dropped the state attributes that are present in the raw tree, so consumers cannot tell a disabled button from an enabled one.

SourceTreeElement now carries enabled, selected and hasFocus. They are emitted sparsely — enabled only when false, selected/hasFocus only when true — to keep the tree small and to match the convention mobilecli already uses for Android.

Needed by mobile-next/mobilewright#271.

Test plan: xcodebuild build-for-testing succeeds; dump a screen with a disabled button and confirm "enabled": false appears in --format json.

[coderabbitai]

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Review configuration:

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 0533b615-64b9-4c02-84bf-cd724263966a

📥 Commits

Reviewing files that changed from the base of the PR and between 5659b95 and 7800933.

📒 Files selected for processing (1)

• DeviceKitTests/XCTest/AXElement.swift

Walkthrough

SourceTreeElement now stores optional enabled, selected, and hasFocus values. Its initializer records only non-default accessibility states: enabled: false for disabled elements, and true for selected or focused elements. Default states remain omitted.

Merge Risk: 🔵 Low · up to 5659b

The change may misrepresent elements with an unknown enabled state as disabled, which could cause consumers to make incorrect UI decisions. The risk is localized and mergeable with explicit owner follow-up to preserve unknown-state information.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description explains the addition of enabled, selected, and hasFocus attributes, their sparse JSON representation, the related issue, and the test plan. It is directly related to the changeset.
Title check	✅ Passed	The title clearly and concisely identifies the main change: adding enabled, selected, and hasFocus to the JSON UI dump.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1…
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.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 1 files.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/source-tree-state-attributes

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[coderabbitai]

Actionable comments posted: 1

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Inline comments:
In `@DeviceKitTests/XCTest/AXElement.swift`:
- Line 40: Update AXElement.init(_:) and AXElement.init(children:) so missing or
non-Boolean enabled values, including synthetic roots, remain unknown rather
than becoming false; preserve enabled field presence separately and have
SourceTreeElement serialization emit false only when the source explicitly
provides a Boolean false.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: cb0ce1f5-ae5c-40ba-87b1-5dc33bb0ed8c

📥 Commits

Reviewing files that changed from the base of the PR and between 6e72652 and 5659b95.

📒 Files selected for processing (1)

• DeviceKitTests/XCTest/AXElement.swift

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