Fix for Main group

[mghenciu]

Summary

This fixes the issue where the main group for all the templates, has some padding on the sides in the editor.
After the fix, there should be no padding in the Editor.

Will affect visual aspect of the product

YES, In the Editor only

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Screenshots

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Test instructions

• Install the build
• open a few templates like 404, front page, index, etc
• see if the main group has Enabled Inner blocks use content width and/or a transparent bg color set
• in case the 2 things mentioned above are checked -> the Main Group shouldn't have any padding on the side in the Editor

Closes #54 .

[github-actions]

Plugin build for 2b8bb1b is ready 🛎️!

• Download NeveFSE - build 🔗

[preda-bogdan]

Code changes look good, we can move this to QA for testing.

[rodica-andronache]

@mghenciu On desktop everything looks ok. I'm wondering if the way it now looks on mobile is ok ( with some sections that don't have any left/right padding ).
Some examples of how it's looking with this PR compared to the current version:
https://vertis.d.pr/i/0rHptW VS https://vertis.d.pr/i/v3CKWw
https://vertis.d.pr/i/XUslY3 VS https://vertis.d.pr/i/rST7tk
Let me know if that's expected or not. Thanks!

[mghenciu]

Thank you Rodica for checking so promptly.
Yes, you are right - there looks to be some changes on Mobile. I'll review this more, and when ready move again into QA.
Sorry for the inconvenience.

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@JohnPixle , apparently using Inner blocks use content width with Neve FSE - there's also a visual issue when previewing Core Styles (attached):

Now, I did some testing with Spectra one (which doesn't uses one main group) and with Frost (which has a main group). And what I noticed in case of Frost, is that they use Inner blocks use content width with all groups, in some they even have values; additionally they use custom padding on the sides - which we don't. Added a video below with Frost:

Screen.Recording.2023-07-13.at.16.37.45.mov

Let me know what you think.
I'll try to test a few more approaches in terms of padding.

[mghenciu]

I did some more testing, and I think there may be some issues how we approached it in code, in terms of styling.

Basically what I see, for example in case of the 404 Page - is that we add some Default Padding from code, but at the same time we add a Negative Margin + we add have things differently styles for the wp-site-blocks class, compared to how Frost does it:

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[cristian-ungureanu]

@mghenciu I will close this PR since the fix was provided in this PR: #75