Apply settings back to created source after requesting properties from FE

[summeroff]

Description

Apply settings back to created source when properties get requested.

Motivation and Context

Current implementation of utility::ProcessProperties does not change updateSource flag.
It leads to missed settings update.

Some values for properties gets populated only inside obs_source_properties. Like the list of displays. And without update source will use non working default values.

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• The code has been tested.
• All commit messages are properly formatted and commits squashed where appropriate.
• I have included updates to all appropriate documentation.

[rosendolu]

Hi @avoitenko-logitech @summeroff is there a way to update source settings after created? I try to update settings fileds but not work. sceneItem position works well

Even if called the update methods
sceneItem.source.update(sceneItem.source.settings)