[daniele-verducci]

Fix empty folder not updated in folder picker due to callback handler never passed to RemoteOperation, that requires it to run the callback on the correct thread.

Repro:

• Select a file, click Move/Copy
• Enter an empty folder
• The "Loading" text remained visible indefinitely, instead of showing "No files here"

🖼️ Screenshots

🏚️ Before	🏡 After

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included or not needed
• 🔙 Backport requests are created or not needed: /backport to stable-xx.x
• 📅 Milestone is set
• 🌸 PR title is meaningful (if it should be in the changelog: is it meaningful to users?)

🤖 AI (if applicable)

• The content of this PR was partly or fully generated using AI (N/A)

[github-actions]

📱 QA build

Download	app-qa-debug.apk
QR code	Open the QR code for this download
Commit	383f090
Version	17977
Available until	7 days after this build

The QA build installs alongside a released Nextcloud app, so you can keep
using your existing install while testing.

Downloading the file requires a GitHub account, so open this link on the
device you want to test on, or transfer the APK to it.

[github-actions]

SpotBugs

Category	Base	New
Bad practice	24	24
Correctness	48	48
Dodgy code	128	128
Experimental	1	1
Malicious code vulnerability	1	1
Multithreaded correctness	13	13
Performance	26	26
Security	15	15
Total	256	256

[github-actions]

master-IT test failed, but no output was generated. Maybe a preliminary stage failed.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...ncloud/android/ui/activity/FolderPickerActivity.kt	0.00%	1 Missing ⚠️

📢 Thoughts on this report? Let us know!