Babel failure on v23.6.0

[marco-ippolito]

I see a babel failure in the CITGM (cc @nicolo-ribaudo):
CITGM run: https://ci.nodejs.org/job/citgm-smoker/3531/

 PASS packages/babel-plugin-proposal-decorators/test/index.js (15.302 s)
 Summary of all failing tests
 FAIL packages/babel-core/test/config-ts.js
 @babel/core config with ts > should work with simple .cts
     /home/iojs/tmp/citgm_tmp/24c5a264-6133-49c4-bef6-83851475ddd3/@babel/core/packages/babel-core/test/fixtures/config-ts/simple-cts/babel.config.cts:1
     import path from "path";
     ^^^^^^
     
     SyntaxError: Cannot use import statement outside a module
         at wrapSafe (node:internal/modules/cjs/loader:1670:18)
         at Module._compile (node:internal/modules/cjs/loader:1713:20)
         at Object.loadCTS [as .cts] (node:internal/modules/cjs/loader:1802:10)
         at Module.load (node:internal/modules/cjs/loader:1473:32)
         at Function._load (node:internal/modules/cjs/loader:1285:12)
         at TracingChannel.traceSync (node:diagnostics_channel:322:14)
         at wrapModuleLoad (node:internal/modules/cjs/loader:234:24)
         at Module.require (node:internal/modules/cjs/loader:1495:12)
         at require (node:internal/modules/helpers:135:16)
         at loadPartialConfigSync (/home/iojs/tmp/citgm_tmp/24c5a264-6133-49c4-bef6-83851475ddd3/@babel/core/packages/babel-core/src/config/index.ts:50:60)
         at file:///home/iojs/tmp/citgm_tmp/24c5a264-6133-49c4-bef6-83851475ddd3/@babel/core/packages/babel-core/test/config-ts.js?1735910074539:25:20
         at async file:///home/iojs/tmp/citgm_tmp/24c5a264-6133-49c4-bef6-83851475ddd3/@babel/core/node_modules/tinypool/dist/esm/entry/worker.js:71:20
 @babel/core config with ts > should throw with invalid .ts register
     Error: expect(received).toThrow(expected)
     
     Expected pattern: /Unexpected identifier.*/
     
     Received function did not throw
         at file:///home/iojs/tmp/citgm_tmp/24c5a264-6133-49c4-bef6-83851475ddd3/@babel/core/packages/babel-core/test/config-ts.js?1735910074539:53:10
         at async file:///home/iojs/tmp/citgm_tmp/24c5a264-6133-49c4-bef6-83851475ddd3/@babel/core/node_modules/tinypool/dist/esm/entry/worker.js:71:20

[nicolo-ribaudo]

Taking a look, it's caused by the new .ts default support