Codegen emits unused `api as generatedApi` import in internal-only .runtime.ts files

[m7md1alaa]

Bug

When all procedures in a module are internal/private, the codegen unconditionally emits

import type {
  api as generatedApi,
  internal as generatedInternal,
} from '<path>/_generated/api';

in the generated .runtime.ts file, but generatedApi is never used because every entry
references generatedInternal only.
TypeScript 5.5+ flags this as TS6196 ('generatedApi' is declared but never used).
Affected files
Any .runtime.ts where every procedure is internal:

• plugins/resend.runtime.ts
• server.runtime.ts