New window size is save even when not used

[bluemarvin]

Hardware

All

Steps to Reproduce

1. Click window resize button
2. Click 0.5x button
3. Press back button to cancel resize and restore window size
4. Kill FxR
5. Launch FxR

Current Behavior

Window size is 0.5x

Expected Behavior

Window size should be same as when FxR was killed.

Regression

Regressed by #1411

[philip-lamb]

@MortimerGoro Is this covered in the current window size work?

[Softvision-GeluHaiduc]

I have verified that this issue is no longer reproducible with the latest FirefoxReality 1.4-32072251 installed on the Oculus Go headset.
Now, the window size that was not saved is not used after a restart of the browser.