fix(client): correct inferring empty object fromc.json({})

[yusukebe]

Fixes #3868

The author should do the following, if applicable

• Add tests
• Run tests
• bun run format:fix && bun run lint:fix to format the code
• Add TSDoc/JSDoc to document the code

[github-actions]

Bundle size check

	main (d72aa4b)	#3873 (db7b1fd)	+/-
Bundle Size (B)	18,771B	18,771B	0B
Bundle Size (KB)	18.33K	18.33K	0K

Compiler Diagnostics

	main (d72aa4b)	#3873 (db7b1fd)	+/-
Files	257	257	0
Lines	115,048	115,035	-13
Identifiers	112,929	112,922	-7
Symbols	301,429	301,427	-2
Types	213,638	213,633	-5
Instantiations	3,090,073	3,090,066	-7
Memory used	444,135K	446,554K	2,419K
I/O read	0.02s	0.03s	0.01s
I/O write	0s	0s	0s
Parse time	0.85s	0.65s	-0.2s
Bind time	0.31s	0.27s	-0.04s
Check time	5.3s	5.32s	0.02s
Emit time	0s	0s	0s
Total time	6.46s	6.24s	-0.22s

---

Reported by octocov

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.33%. Comparing base (d72aa4b) to head (85239bf).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3873   +/-   ##
=======================================
  Coverage   91.33%   91.33%           
=======================================
  Files         162      162           
  Lines       10257    10257           
  Branches     2900     2938   +38     
=======================================
  Hits         9368     9368           
  Misses        888      888           
  Partials        1        1           

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[yusukebe]

@meows Can you review this?