Fix wrong line separators in IntellijEditorTextField document creation

[egorikftp]

• closes: Issue using SVG to XML conversion #933

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📝 Changelog

If this PR introduces user-facing changes, please update the relevant Unreleased section in changelogs:

• 🔌 IntelliJ Plugin
• 🖥️ CLI
• 🐘 Gradle Plugin

[coderabbitai]

Walkthrough

The pull request addresses an issue with incorrect line separators in document creation. The fix normalizes line endings in input text before it is used in document initialization and updates. This involves converting line separators to the system-appropriate format and consistently using the normalized text value across document creation, editor operations, and effect dependencies. The changes are focused on ensuring proper line ending handling throughout the component lifecycle.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title directly and clearly describes the main change: fixing wrong line separators in IntellijEditorTextField document creation, which aligns with the core objective.
Description check	✅ Passed	The description includes the linked issue (#933) and appropriately marks the IntelliJ Plugin changelog as updated, meeting the template requirements.
Linked Issues check	✅ Passed	The changes normalize line separators using StringUtil.convertLineSeparators before document creation [#933], directly addressing the assertion error caused by CRLF sequences in the input text.
Out of Scope Changes check	✅ Passed	All changes are scoped to fixing line separator handling in IntellijEditorTextField and its changelog entry; no unrelated modifications detected.

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✨ Finishing Touches

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• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch bug/fix-Wrong-line-separators

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[coderabbitai]

Actionable comments posted: 1

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Verify each finding against the current code and only fix it if needed.

Inline comments:
In
`@tools/idea-plugin/src/main/kotlin/io/github/composegears/valkyrie/jewel/editor/IntellijEditorTextField.kt`:
- Around line 130-136: The LaunchedEffect currently only depends on
normalizedText, so when document is null it returns early and won't re-run once
the document is created; update the LaunchedEffect key tuple to include document
(e.g., LaunchedEffect(normalizedText, document)) so the effect re-executes when
the document becomes available and then performs the edtWriteAction {
doc.setText(normalizedText) } to sync text; locate the LaunchedEffect block that
references normalizedText and document in IntellijEditorTextField and add
document to its dependency keys.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 9774d48e-8989-4904-977d-92211fde12c6

📥 Commits

Reviewing files that changed from the base of the PR and between 697ee5f and c4e8d0c.

📒 Files selected for processing (2)

• tools/idea-plugin/CHANGELOG.md
• tools/idea-plugin/src/main/kotlin/io/github/composegears/valkyrie/jewel/editor/IntellijEditorTextField.kt