Duplicate code in TermControl.cpp

[serd2011]

While reading code in TermControl.cpp i stumble upon two lines of code that are absolutely the same and are called one after another.

terminal/src/cascadia/TerminalControl/TermControl.cpp

Lines 333 to 334 in 670ae2b

	const auto bg = newAppearance.DefaultBackground();
	_changeBackgroundColor(bg);

terminal/src/cascadia/TerminalControl/TermControl.cpp

Lines 380 to 381 in 670ae2b

	const auto bg = newSettings.DefaultBackground();
	_changeBackgroundColor(bg);

They are both called from TermControl::UpdateSettings()
_UpdateSettingsFromUIThread -> _ApplyUISettings and _UpdateAppearanceFromUIThread

Not sure if this is because of the situations in which this functions might be called separately but this just looks weird

[zadjii-msft]

I think I already got rid of this code in the branch I'm working on this 😋 But I'll leave it open to make sure.

[zadjii-msft]

Just double checked this, yep, I've got this fixed. I'll include this one in the PR.