test(graphql): add subscription tests with variable syntax

[sundersc]

Add subscription tests with variable syntax.

• Pass owner argument with variable syntax.
• Use variable syntax but do not pass optional argument value.

[phani-srikar]

I see a lot of commits unrelated to the change in this PR. Can you please update your fork with latest remote main? Thanks.

[codecov-commenter]

Codecov Report

Merging #755 (1454cec) into main (6a7b9f3) will increase coverage by 0.43%.
The diff coverage is 91.30%.

@@            Coverage Diff             @@
##             main     #755      +/-   ##
==========================================
+ Coverage   63.14%   63.58%   +0.43%     
==========================================
  Files         278      279       +1     
  Lines       18125    18212      +87     
  Branches     4375     4401      +26     
==========================================
+ Hits        11445    11580     +135     
+ Misses       6093     6044      -49     
- Partials      587      588       +1     

Impacted Files	Coverage Δ
...on-transformer/src/graphql-function-transformer.ts	93.54% <ø> (ø)
...l-http-transformer/src/graphql-http-transformer.ts	96.21% <ø> (ø)
...transformer/src/graphql-predictions-transformer.ts	97.80% <ø> (ø)
...-transformer/src/graphql-belongs-to-transformer.ts	97.26% <ø> (ø)
...al-transformer/src/graphql-has-many-transformer.ts	100.00% <ø> (ø)
...nal-transformer/src/graphql-has-one-transformer.ts	98.59% <ø> (ø)
...searchable-transformer/src/cdk/create-cfnOutput.ts	100.00% <ø> (ø)
...graphql-elasticsearch-transformer/src/resources.ts	100.00% <ø> (ø)
...fy-graphql-auth-transformer/src/resolvers/field.ts	71.42% <33.33%> (+2.04%)	⬆️
...l-transformer-core/src/transformation/transform.ts	16.26% <50.00%> (-0.05%)	⬇️
... and 49 more

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more