fix: make TanStack Query plugin work with class-based services

[mrlubos]

Closes https://github.com/hey-api/openapi-ts/issues/1090

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Latest commit: b6e350a9cc2d82ac4496b7d57ec8b58978c951c2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ------------------- | ----- | | @hey-api/openapi-ts | Patch |

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commit: b6e350a

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Codecov Report

Attention: Patch coverage is 64.70588% with 18 lines in your changes missing coverage. Please review.

Project coverage is 81.14%. Comparing base (867682d) to head (b6e350a). Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...napi-ts/src/plugins/@tanstack/query-core/plugin.ts	10.52%	17 Missing :warning:
packages/openapi-ts/src/generate/transformers.ts	50.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1096 +/- ## ========================================== - Coverage 81.21% 81.14% -0.08% ========================================== Files 102 102 Lines 11506 11540 +34 Branches 1232 1234 +2 ========================================== + Hits 9345 9364 +19 - Misses 2158 2173 +15 Partials 3 3 ``` | [Flag](https://app.codecov.io/gh/hey-api/openapi-ts/pull/1096/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hey-api) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/hey-api/openapi-ts/pull/1096/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hey-api) | `81.14% <64.70%> (-0.08%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=hey-api#carryforward-flags-in-the-pull-request-comment) to find out more.

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