ReadSetting with the default is a convenience function reading
settings,  not for use in an internal environment. It tries to manage
the default value of a setting.

Fixes a potential but not reproduced issue where the custom config
is being applied to the global config.

Previously was not respecting whether the setting was default.

Causes a crash on MSVC from a race condition on application quit.

Intended to address yuzu-emu/yuzu/issues/11137

Fixes a bug where a restore button could be created for an unmanaged
widget.

Was producing out of order settings as a result of the switch to vectors

Without this, the Reset All Settings button would be selected by default

Improve storage requirements.

Unecessary, and would run every time the settings are logged.

Fixes essentially a shadowing issue.

Addresses review feedback

Co-authored-by: Morph <39850852+Morph1984@users.noreply.github.com>

Allows for 6GB and 8GB layouts to be selected.

Co-authored-by: Morph <39850852+Morph1984@users.noreply.github.com>

Not sure how I missed this earlier, but these vectors can be constructed
using the type of the enum.