fix(Kotlin): use the global apiNamePrefix and apiNameSuffix settings instead of apiSuffix (generator's option)

[manujell73]

fixes (#23822)

As discussed in #23834 opened PR for master aswell as the change has a fallback.

Removes Kotlin specific apiSuffix additionalSetting.
Adds support for global apiNamePrefix and apiNameSuffix settings to the kotlin generator.

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  Commit all changed files.
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Kotlin comittee members:
@karismann (2019/03) @Zomzog (2019/04) @andrewemery (2019/10) @4brunu (2019/11) @yutaka0m (2020/03) @stefankoppier (2022/06) @e5l (2024/10) @dennisameling (2026/02)

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Summary by cubic

Kotlin generators now use the global apiNamePrefix and apiNameSuffix for API class names, replacing the Kotlin-only apiSuffix. Default behavior is unchanged: classes end with Api, and empty names produce DefaultApi.

• Bug Fixes

  • AbstractKotlinCodegen.toApiName now builds names as prefix + camelized name + suffix; empty names return DefaultApi.
  • Removed apiSuffix across the codebase (including CodegenConstants, generator options, docs, and tests). Added tests for prefix, suffix, and prefix+suffix.

• Migration

  • Replace -DapiSuffix=Foo with -DapiNameSuffix=Foo (and -DapiNamePrefix=Bar if needed). No change if you use the default Api suffix.

^{Written for commit 25a101a. Summary will update on new commits.}

[cubic-dev-ai]

No issues found across 8 files

_{Re-trigger cubic}