x/crypto/acme: TestRFC_WaitOrder failures

[gopherbot]

#!watchflakes
post <- pkg == "golang.org/x/crypto/acme" && test == "TestRFC_WaitOrder"

Issue created automatically to collect these failures.

Example (log):

--- FAIL: TestRFC_WaitOrder (4.07s)
    --- FAIL: TestRFC_WaitOrder/valid (3.00s)
        rfc8555_test.go:880: WaitOrder took too long to return

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "golang.org/x/crypto/acme" && test == "TestRFC_WaitOrder"

2022-11-17 19:18 darwin-amd64-11_0 crypto@2c476679 go@e727f419 x/crypto/acme.TestRFC_WaitOrder (log)

--- FAIL: TestRFC_WaitOrder (4.07s) --- FAIL: TestRFC_WaitOrder/valid (3.00s) rfc8555_test.go:880: WaitOrder took too long to return

— watchflakes

[bcmills]

Like #57107, this appears to be caused by a hard-coded timeout in the test.

[bcmills]

Duplicate of #57107