test: test-http(s)-set-timeout-server.js tests should be more similar #13588

• Version: all
• Platform: n/a
• Subsystem: test, http, https

Both of these tests contain unique changes that should copied to the other.

Examples:

• test-http-set-timeout-server.js has a secReceived check in serverResponseTimeoutWithPipeline() that was added to prevent flakiness, but this does not exist in the https counterpart.

• test-https-set-timeout-server.js utilizes common.mustCall(), common.mustNotCall(), etc., while the http counterpart still utilizes the old method of checking flags on exit of the process.