x/crypto/openpgp/clearsign: TestMultiSign fails with "random source is broken" at Go tip #70682
Description
At Go tip, TestMultiSign fails when run without -short flag, including on first class ports like linux/amd64:
=== RUN TestMultiSign
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
clearsign_test.go:155: cannot create key: rsa: generated p == q, random source is broken
--- FAIL: TestMultiSign (6.93s)
(E.g., build 8729461560583552209.)
Though it started failing earlier, as of go.dev/cl/632477, with a different error ("clearsign_test.go:155: cannot create key: crypto/rsa: decryption error").