False Dialog For Settings Change

Operating System Info

Windows 11

Other OS

No response

OBS Studio Version

30.0.0

OBS Studio Version (Other)

No response

OBS Studio Log URL

https://obsproject.com/logs/oMcBK8ffD3YThdE5

OBS Studio Crash Log URL

No response

Expected Behavior

To not get a dialog asking if I want to save settings, when no settings have changed, when wanting to close out of the settings window

Current Behavior

Currently, with at least this circumstance, you will get the dialog that there are unsaved changes to settings when no changes have been made. Will update additional circumstances as I come across them.
Current discovered circumstance is going into settings > stream, expanding the "service" dropdown, selecting "show all", then clicking off of it to close dropdown without actually changing what service it's set to. This triggers the "apply" button to become active, and produces the unsaved changes dialog, even though there were no actual changes.

Steps to Reproduce

1. Open Settings
2. Go to "stream" tab
3. Click on "service" dropdown
4. Set to "show all"
5. Click off as to not actually change what service you are set to
6. Observe "apply" button becoming active and try to close the settings window
   ...

https://github.com/obsproject/obs-studio/assets/66339760/96b9593a-606a-4d33-a1d3-bcd5132fad0d

Anything else we should know?

No response

Start by reproducing the issue in OBS Studio 30.0.0 through Settings > Stream, using the Service dropdown and Show All option. Trace how the settings window marks changes and enables Apply after dismissing the unchanged selection. Done means unchanged settings do not enable Apply or show the unsaved-changes dialog, with the reproduction steps still passing.