testing: skip flag not applied to examples #61482
Description
What version of Go are you using (go version)?
$ go version go version devel go1.21-9cf97cbbdd Fri Jul 14 16:37:04 2023 +0200 darwin/arm64
Does this issue reproduce with the latest release?
Yes
What did you do?
Run go test -v strings -skip Trim.
What did you expect to see?
Regular expression "Trim" should skip ExampleTrim.
-skip regexp
Run only those tests, examples, fuzz tests, and benchmarks that
do not match the regular expression.
What did you see instead?
Go runs ExampleTrim anyway.
=== RUN ExampleTrim
--- PASS: ExampleTrim (0.00s)
It does skip TestTrim though.