Fix continuation of JSON deserialization (#42158)

Fix continuation of JSON deserialization (#42158)

* Repro #42070

* formatting

* namespace

* Fix

* never forget the header

* More tests
- Test continuation at every position inside the tested object
- Many member with primitive and nullable types
- One more level of nested object
- All combinations of class/struct for tested and nested object
- tested and nested object with parametrized ctor for some properties

* Addressed feedback

* Test with original repro data from #42070

* custom converter to ensure the padding is written in front of the tested object

* rename

* test data moved to Strings.resx