RFR: 8206430: Use consistent pattern for startup in FX system tests

[Ajit Ghaisas]

On Wed, 16 Nov 2022 17:24:29 GMT, Andy Goryachev <angorya at openjdk.org> wrote:

> I am running the full test with this command - am I missing anything?
`/bin/sh gradlew -PSTUB_RUNTIME=../caches/modular-sdk -PFULL_TEST=true -PUSE_ROBOT=true cleanTest test --no-daemon 2>&1 | tee ~/`date +"test-%Y-%m%d-%H%M%S"`.log`

I use this command to run a full test run -
` gradle --continue --info -PFULL_TEST=true -PUSE_ROBOT=true :systemTests:cleanTest :systemTests:test`

> These tests PASS for me (MacBook Pro x64 running macOS 12.5.1).
@aghaisas how are they failing?

The two failures that I had reported were failing with "picked color being incorrect" and "ComboBox popup being not displayed due to timeout"
Today, I have had successful run of all tests run thrice with the latest patch. It looks like the failures that I have seen yesterday were inconsistent.

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PR: https://git.openjdk.org/jfx/pull/950