(fix) Fix no adapter error when saving a form resource

[jnsereko]

Description of what I changed

Getting/Adding a form resource to a form like below errors with 500 No adapter for handler

Getting a form Rresource

curl --location 'https://dev3.openmrs.org/openmrs/ws/rest/v1/form/107c32e8-a318-30bf-acfc-a0244f3a795a/resource/4e321497-2934-473d-9539-cf00b41f825e/value' \
--header 'Authorization: ••••••' \
--header 'Cookie: JSESSIONID=8831FB2E6E92D203605E25C0FACDCD33'

Before

After

Issue I worked on

see https://openmrs.atlassian.net/browse/O3-3971

Checklist: I completed these to help reviewers :)

• My IDE is configured to follow the code style of this project.

  No? Unsure? -> configure your IDE, format the code and add the changes with git add . && git commit --amend

• I have added tests to cover my changes. (If you refactored
  existing code that was well tested you do not have to add tests)

  No? -> write tests and add them to this commit git add . && git commit --amend

• I ran mvn clean package right before creating this pull request and
  added all formatting changes to my commit.

  No? -> execute above command

• All new and existing tests passed.

  No? -> figure out why and add the fix to your commit. It is your responsibility to make sure your code works.

• My pull request is based on the latest changes of the master branch.

  No? Unsure? -> execute command git pull --rebase upstream master

[jnsereko]

am fixing the test