chore: convert FlagRenameDialog to ViewBinding

[david-allison]

• Part of Add View Binding #11116

Approach

• Cherry picked david-allison@7eb3b6e

How Has This Been Tested?

Brief test: Open Dialog with Pixel 6 Pro API 35 Emulator

Checklist

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[harrytmthy]

Hi @david-allison, I found a lifecycle scope mismatch here. This function is launched on Activity scope, but update a DialogFragment view after suspension. If the dialog is dismissed before createFlagList() resumes, you risk touching a dead view, potentially crashing after dismiss.

Instead, let's tie the job to the dialog's view lifecycle:

lifecycleScope.launch {
    val items = withContext(Dispatchers.IO) { createFlagList() }
    val adapter = FlagAdapter(lifecycleScope = lifecycleScope)
    binding.recyclerViewFlags.layoutManager = LinearLayoutManager(requireContext())
    binding.recyclerViewFlags.adapter = adapter
    adapter.submitList(items)
}