Improve JSON to Record Conversion

[Shadow-Devil]

Purpose

I modified both json-mapper and json-to-record-converter (in the Language Server) to have the desired behaviour from the issue. Records are now always closed and might have a rest field with json...;. Also, no any or anydata is produced but only json.

Fixes #42610

Approach

Describe how you are implementing the solutions along with the design details.

Samples

Provide high-level details about the samples related to this feature.

Remarks

List any other known issues, related PRs, TODO items, or any other notes related to the PR.

Check List

• Read the Contributing Guide
• Updated Change Log
• Checked Tooling Support (#)
• Added necessary tests
  • Unit Tests
  • Spec Conformance Tests
  • Integration Tests
  • Ballerina By Example Tests
• Increased Test Coverage
• Added necessary documentation
  • API documentation
  • Module documentation in Module.md files
  • Ballerina By Examples

[AzeemMuzammil]

Shall we follow the standard camelCase?

Suggested change

	TypeDescriptorNode nonJSONDataNode = null;
	TypeDescriptorNode nonJsonDataNode = null;

[Shadow-Devil]

yes, I will fix that soon

[AzeemMuzammil]

There is a checkstyle failure as well, shall we check that as well?

[Shadow-Devil]

I was a bit unsure about the open/closeness of the records since in the json-mapper the isClosed is also applied into inner records but in the language server json-to-record-converter this is only applied on the outer most level and all inner records were open. I now adjusted the language server module to be the same as json-mapper since I think this approach makes more sense.

[codecov]

Codecov Report

Attention: Patch coverage is 84.11215% with 17 lines in your changes missing coverage. Please review.

Project coverage is 77.55%. Comparing base (68e12c3) to head (66f7b52).
Report is 40 commits behind head on master.

Files with missing lines	Patch %	Lines
...io/ballerina/converters/JsonToRecordConverter.java	82.35%	7 Missing and 5 partials ⚠️
...va/io/ballerina/jsonmapper/JsonToRecordMapper.java	84.61%	1 Missing and 3 partials ⚠️
...a/io/ballerina/converters/util/ConverterUtils.java	50.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #43482      +/-   ##
============================================
- Coverage     77.55%   77.55%   -0.01%     
+ Complexity    58723    58722       -1     
============================================
  Files          3447     3447              
  Lines        219656   219658       +2     
  Branches      28917    28915       -2     
============================================
+ Hits         170364   170365       +1     
- Misses        39891    39892       +1     
  Partials       9401     9401              

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[gimantha]

@Shadow-Devil Shall we fix the code conflict please?

[Shadow-Devil]

@gimantha code conflicts are fixed and pipeline was successful