fix(MainActivity): restore bottom margin after IME hides

[WhiredPlanck]

Pull request

Issue tracker

Fixes will automatically close the related issues

Fixes # N/A

Feature

Describe features of this pull request

Code of conduct

• CONTRIBUTING

Code style

• make sytle-lint
• Conventional Commits

Build pass

• make debug

Manually test

• Done

Code Review

1. No wildcards import
2. Manual build and test pass
3. GitHub Action CI pass
4. At least one contributor review and approve
5. Merged clean without conflicts
6. PR will be merged by rebase upstream base

Daily build

Login and download artifact at https://github.com/osfans/trime/actions

Additional Info

[Copilot]

Pull request overview

This PR updates MainActivity’s window insets handling so the root view’s bottom margin is correctly restored when the IME (keyboard) hides, while still accounting for system bars.

Changes:

• Capture IME insets alongside system bar insets in the initial setOnApplyWindowInsetsListener.
• Set binding.root’s bottomMargin to maxOf(systemBars.bottom, ime.bottom) so it reflects whichever inset is larger.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[WhiredPlanck]

This is a small patch so I merge it directly.