refactor: store __typename in value instead of separate entity

[meskill]

Summary:
Briefly describe the changes made in this PR.

Issue Reference(s):
Fixes #... (Replace "..." with the issue number)

Build & Testing:

• [ ] I ran cargo test successfully.
• [ ] I have run ./lint.sh --mode=fix to fix all linting issues raised by ./lint.sh --mode=check.

Checklist:

• [ ] I have added relevant unit & integration tests.
• [ ] I have updated the documentation accordingly.
• [ ] I have performed a self-review of my code.
• [ ] PR follows the naming convention of <type>(<optional scope>): <title>

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 56.83453% with 60 lines in your changes missing coverage. Please review.

Project coverage is 86.31%. Comparing base (9a50f13) to head (d93aab2). Report is 1 commits behind head on main.

Files	Patch %	Lines
src/core/jit/builder.rs	5.00%	19 Missing :warning:
src/core/json/borrow.rs	0.00%	15 Missing :warning:
src/core/json/serde.rs	0.00%	13 Missing :warning:
src/core/json/graphql.rs	56.25%	7 Missing :warning:
src/core/json/json_like_list.rs	68.75%	5 Missing :warning:
src/core/ir/discriminator.rs	92.30%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2626      +/-   ##
==========================================
- Coverage   86.46%   86.31%   -0.15%     
==========================================
  Files         255      256       +1     
  Lines       24972    24999      +27     
==========================================
- Hits        21593    21579      -14     
- Misses       3379     3420      +41     

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[github-actions[bot]]

Bencher

Report	Mon, August 26, 2024 at 10:40:34 UTC
Project	tailcall
Branch	2626/merge
Testbed	benchmarking-runner

🚨 3 ALERTS: Threshold Boundary Limits exceeded!

Benchmark	Measure (units)	View	Value	Lower Boundary	Upper Boundary
input/vars.missing	Latency (nanoseconds (ns))	🚨 (view plot | view alert)	11.45 (+32.49%)		11.12 (102.99%)
synth_nested_borrow	Latency (nanoseconds (ns))	🚨 (view plot | view alert)	70,359.00 (+93.68%)		67,839.56 (103.71%)
test_handle_request_jit	Latency (nanoseconds (ns))	🚨 (view plot | view alert)	140,560.00 (+36.20%)		131,729.87 (106.70%)

Click to view all benchmark results

Benchmark	Latency	Latency Results nanoseconds (ns) | (Δ%)	Latency Upper Boundary nanoseconds (ns) | (%)
from_json_bench	✅ (view plot)	6,227,400.00 (-0.42%)	6,867,035.10 (90.69%)
group_by	✅ (view plot)	481.18 (-2.82%)	536.18 (89.74%)
input/args.missing	✅ (view plot)	25.48 (-0.74%)	28.47 (89.48%)
input/args.nested.existing	✅ (view plot)	46.01 (-3.09%)	55.60 (82.74%)
input/args.nested.missing	✅ (view plot)	38.65 (-0.16%)	40.83 (94.65%)
input/args.root	✅ (view plot)	43.36 (-0.65%)	52.69 (82.30%)
input/headers.existing	✅ (view plot)	32.65 (+3.39%)	34.08 (95.80%)
input/headers.missing	✅ (view plot)	31.62 (+3.21%)	33.44 (94.54%)
input/value.missing	✅ (view plot)	23.36 (-0.07%)	24.65 (94.75%)
input/value.nested.existing	✅ (view plot)	42.26 (-1.06%)	45.78 (92.31%)
input/value.nested.missing	✅ (view plot)	34.80 (-5.68%)	39.71 (87.65%)
input/value.root	✅ (view plot)	38.82 (+1.30%)	41.08 (94.51%)
input/vars.existing	✅ (view plot)	8.37 (+1.81%)	9.74 (85.91%)
input/vars.missing	🚨 (view plot | view alert)	11.45 (+32.49%)	11.12 (102.99%)
synth_nested	✅ (view plot)	127,440.00 (+27.47%)	195,838.58 (65.07%)
synth_nested_borrow	🚨 (view plot | view alert)	70,359.00 (+93.68%)	67,839.56 (103.71%)
test_batched_body	✅ (view plot)	1,902.80 (-6.54%)	2,475.66 (76.86%)
test_batched_body #2	✅ (view plot)	1,495,600.00 (-7.68%)	1,765,041.42 (84.73%)
test_data_loader	✅ (view plot)	422,320.00 (+3.41%)	477,732.38 (88.40%)
test_handle_request	✅ (view plot)	129,690.00 (-9.71%)	153,862.84 (84.29%)
test_handle_request_jit	🚨 (view plot | view alert)	140,560.00 (+36.20%)	131,729.87 (106.70%)
test_http_execute_method	✅ (view plot)	14,286.00 (-2.73%)	16,828.64 (84.89%)
with_mustache_expressions	✅ (view plot)	1,088.20 (-2.32%)	1,184.77 (91.85%)
with_mustache_literal	✅ (view plot)	691.28 (-3.47%)	769.96 (89.78%)

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[github-actions[bot]]

Action required: PR inactive for 5 days. Status update or closure in 10 days.