fix(web): make input focusable in the whole component's area

[hejsztynx]

Summary

Fixes #793

All web e2e tests pass. Effectively, nothing should have changed visually.

Test Plan

In the example app, experiment with height, minHeight and maxHeight props. Write some text, so the input becomes scrollable. Verify everything looks in place.

Screenshots / Videos

When minHeight was set:

Before:

Screen.Recording.2026-09-10.at.14.47.29.mov

After:

Screen.Recording.2026-09-10.at.14.46.04.mov

Compatibility

OS	Implemented
iOS	❌
Android	❌
Web	✅

Checklist

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

[Copilot]

🟡 Changes recommended

The newly added .tiptap { flex: 1; } selector is overly broad and can unintentionally affect unrelated TipTap instances in host apps unless scoped to the component.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

This PR addresses web focus behavior for EnrichedTextInput when minHeight (or similar sizing props) creates extra empty area below the first line, by adjusting CSS layout so the editor surface can expand to fill the component’s height.

Changes:

• Add flexbox layout to the eti-editor container so its child can stretch vertically.
• Add a flex: 1 rule intended to make the TipTap/ProseMirror editor surface fill the available space.

File summaries

File	Description
src/web/EnrichedText.css	Adds flexbox rules to make the editable area expand and become focusable across the full component height on web.

Review details

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

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[Copilot]

🟢 Approval recommended

The change is narrowly scoped to web CSS, aligns with existing DOM assumptions used in Playwright helpers (e.g., .eti-editor .ProseMirror), and directly addresses the reported focus behavior without introducing API changes.

Review details

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