api: correct DC_CERTCK_ACCEPT_* values and docs (#6176)

this PR changes `DC_CERTCK_ACCEPT_*` to the same values in cffi as rust
does. and regards the same values as deprecated afterwards

there is some confusion about what is deprecated and what not, see
https://github.com/deltachat/deltachat-android/issues/3408

iOS needs to be adapted as it was following the docs in the CFFI before,
same desktop. both need to be graceful on reading and strict on writing.

~~**this PR is considered harmful,** so we should not merge that in
during 1.48 release, there is no urgency, things are fine (wondering if
it isn't even worth the effort, however, having different values and
deprecations is a call for trouble in the future ...)~~

---------

Co-authored-by: iequidoo <117991069+iequidoo@users.noreply.github.com>

node/lib/constants.ts

@@ -1,6 +1,7 @@
 // Generated!
 
 export enum C {
+  DC_CERTCK_ACCEPT_INVALID = 2,
   DC_CERTCK_ACCEPT_INVALID_CERTIFICATES = 3,
   DC_CERTCK_AUTO = 0,
   DC_CERTCK_STRICT = 1,