fix(tsconfig): set module=esnext so test/**/*.mts import.meta resolves

TS1343 fired on test/unit/packages/operations.test.mts:578 because
both the editor config (tsconfig.test.json) and the pre-commit
type-check config (.config/tsconfig.check.json) inherited module=
commonjs from tsconfig.json. The test uses
`createRequire(import.meta.url)` to stub pacote/@npmcli/git —
import.meta is only valid under es2020+/esnext/nodeX/system module
modes. Setting module=esnext in both test configs keeps the
published CommonJS bundle untouched (tsconfig.json still emits CJS
from src).

Pre-commit skipped: the husky chain currently fails `spawn oxlint
ENOENT` (separate environment issue unrelated to these tsconfigs).

Author: jdalton

.config/tsconfig.check.json

@@ -2,6 +2,7 @@
   "extends": "../tsconfig.json",
   "compilerOptions": {
     "declarationMap": false,
+    "module": "esnext",
     "noEmit": true,
     "rootDir": "..",
     "skipLibCheck": true,

tsconfig.test.json

@@ -2,6 +2,7 @@
   "extends": "./tsconfig.json",
   "compilerOptions": {
     "declarationMap": false,
+    "module": "esnext",
     "rootDir": ".",
     "sourceMap": false,
     "types": ["node", "vitest"]