Revert "test: fix test under lts/erbium"

This reverts commit 22275c7.

test/jwt/sign.test.mjs

@@ -98,17 +98,8 @@ async function testJWTsetFunction(t, method, claim, value, expected = value) {
  t.true(claim in claims)
  t.is(claims[claim], expected)
 }
-
-function getTypeOf(input) {
- try {
- return input.constructor.name
- } catch {
- return typeof input
- }
-}
-
 testJWTsetFunction.title = (title, method, claim, value) =>
- `SignJWT.prototype.${method} called with ${getTypeOf(value)}`
+ `SignJWT.prototype.${method} called with ${value?.constructor?.name || typeof value}`
 
 test(testJWTsetFunction, 'setIssuer', 'iss', 'urn:example:issuer')
 test(testJWTsetFunction, 'setSubject', 'sub', 'urn:example:subject')