fix(ios): don't clear typing attributes on empty editor focus

[hejsztynx]

Summary

fixes #322

Currently, in manageTypingAttributesWithOnlySelection:YES, we clear typing attributes and then apply the ones applicable to the content. We also do that when editor's content itself is empty, but when there is no content, there is no need to reapply the typing attributes, as there is nothing to reapply on. That also introduced a case where a user would first set the active styles (typing attributes) programmatically, e.g. via a toolbar, and then focus it. This would result in priorly chosen styles to be reset, which is unintuitive and inconsistent to how it works on both Android and Web.

Test Plan

Follow the steps in the attached video

Screenshots / Videos

Before:

Screen.Recording.2026-09-08.at.15.51.41.mov

After:

Screen.Recording.2026-09-08.at.15.43.45.mov

Compatibility

OS	Implemented
iOS	✅
Android	❌
Web	❌

Checklist

• E2E tests are passing
• Required E2E tests have been added (if applicable)

[Copilot]

🟢 Approval recommended

The change is small, localized, and directly addresses the described iOS behavior without altering the broader typing-attributes flow for non-empty content.

Pull request overview

This PR adjusts iOS typing-attributes management so that focusing an empty editor (where only the selection changed) no longer clears/reset typing attributes, preserving styles set programmatically (e.g., via a toolbar) and aligning behavior with Android/Web.

Changes:

• Add an early return in manageTypingAttributesWithOnlySelection:YES when the editor content length is 0, avoiding unnecessary typing-attribute clearing/reapplication on an empty document.

File summaries

File	Description
ios/inputAttributesManager/InputAttributesManager.mm	Skips typing-attribute clearing when only the selection changes and the editor is empty, preventing unintended style resets on focus.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Lite

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