Surround fixup

[sql-koala]

What this PR does / why we need it:
This deals with a few minor issues, that came up with surround rewrite.

Which issue(s) this PR fixes
fixes #6812
fixes #6743
fixes #6848
fixes #7003

Special notes for your reviewer:
I tested this, with the switch set, there is no map on cs and lagfree maps on c are possible.

[sql-koala]

about this switch: I want to do one switch for all cases (right now there is only surround. there might be coerce cr or exchange cx).
Not one per possible plugin; that would bloat the code and config.
the only real use case I see, is the few users with custom keyboard layouts. For that, mappings like cr or cx will be wrong same as cs.

[kino-ma]

I'm looking for updates on this PR 👀

[sql-koala]

Hi @J-Fields can we get this merged?
The surround plugin is "broken" only for a niche group of user (custom keyboard layouts like dvorak ...) but they have no way to fix it themself. Only disable surround entirely.

[sql-koala]

Hi @J-Fields I changed the flag as you suggested.

Build now fails because "prettier" on Readme.me. Can you fix that? Should be simple.
I tried, but my local build setup is out of sync with this repo master.

The code itself builds and works.

[lionel-]

Any chance this could be merged? This would greatly help users of alternative keyboard layouts.

[stasnocap]

Please, merge this

[qdii]

Hello, I'd like this merged as well

[CorentinDeBoisset]

I created this PR, with a green CI, so it could be merged