subset of small-order Ed25519 vectors is failing in WPTs

I've been working on upgrading the Web Platform Tests in PR #54468, but I'm running into an issue with the WebCryptoAPI tests failing. After investigating, I found that I could reproduce the problem in Node.js. The error seems to be related to the crypto.subtle API, which isn't producing the expected results when verifying data in Ed25519.

FWIW Node.js isn't the only runtime per https://wpt.fyi/results/WebCryptoAPI/sign_verify/eddsa.https.any.html?label=experimental&label=master&aligned

The original error from running the Web Platform Tests is:

[UNEXPECTED_FAILURE][FAIL] Ed25519 Verification checks with small-order key of order - Test 0
assert_equals: Signature verification result. expected false but got true
    at Test.<anonymous> (/test/fixtures/wpt/WebCryptoAPI/sign_verify/eddsa.js:235:15)
Command: /out/Release/node  /test/wpt/test-webcrypto.js 'sign_verify/eddsa.https.any.js'

[UNEXPECTED_FAILURE][FAIL] Ed25519 Verification checks with small-order key of order - Test 1
assert_equals: Signature verification result. expected false but got true
    at Test.<anonymous> (/test/fixtures/wpt/WebCryptoAPI/sign_verify/eddsa.js:235:15)
Command: /out/Release/node  /test/wpt/test-webcrypto.js 'sign_verify/eddsa.https.any.js'

[UNEXPECTED_FAILURE][FAIL] Ed25519 Verification checks with small-order key of order - Test 2
assert_equals: Signature verification result. expected false but got true
    at Test.<anonymous> (/test/fixtures/wpt/WebCryptoAPI/sign_verify/eddsa.js:235:15)
Command: /out/Release/node  /test/wpt/test-webcrypto.js 'sign_verify/eddsa.https.any.js'

My minimal reproduction is:

var pubKeys = [
	[0xc7, 0x17, 0x6a, 0x70, 0x3d, 0x4d, 0xd8, 0x4f, 0xba, 0x3c, 0x0b, 0x76, 0x0d, 0x10, 0x67, 0x0f, 0x2a, 0x20, 0x53, 0xfa, 0x2c, 0x39, 0xcc, 0xc6, 0x4e, 0xc7, 0xfd, 0x77, 0x92, 0xac, 0x03, 0xfa], // kSmallOrderPoints #5
	[0xf7, 0xba, 0xde, 0xc5, 0xb8, 0xab, 0xea, 0xf6, 0x99, 0x58, 0x39, 0x92, 0x21, 0x9b, 0x7b, 0x22, 0x3f, 0x1d