Support transient editor configs

[ajbozarth]

References

Fixes #7295 as (re)discovered in #7350

Code changes

Currently when global file editor settings are changed the transient editor-specific settings are reset to their default global values.

Now the transient editor-specific configs are skipped when any global settings updates are applied to each editor's configs.

User-facing changes

Now when users change setting such as tab size or font size the settings for line numbers, match brackets and line wrap wont reset to their default

Backwards-incompatible changes

N/A

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[ajbozarth]

This is my third and most successful version addressing this problem. As discussed at the in-person sprint, I did not go forward with just making the three affected setting global, since having those setting be transient and editor specific is closer to expected behavior (ala IDEs). I then tried setting the configs to their current editor value in the updateSettings function, this is the code I had when we last discussed in-person. But upon testing I found that that "fix" caused all the open editors to match the current editors transient settings on global changes, and not just the current one.

That left me with this solution, instead of trying to change the settings I updated the function that updated each editor's config with the latest global values to skip the three transient configs.

[blink1073]

LGTM, thanks!