Build the launcher on Qt below 6.6 and cap the reference-clock log (#653)

* Fix launcher build on Qt versions below 6.6

QVulkanInstance::NoPortabilityDrivers is only available since Qt 6.6, so
guard its use the same way as the Apple-specific case.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Stop logging every reference-clock copy

CopyData of the clock counter runs on every GPU wait, so the handler wrote
one line per wait: a single SpongeBob boot that never reaches a frame logs
1312 of them, and the count grows with run time. Keep the first 64 lines
for diagnostics; the copy itself is unchanged.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Remove reference-clock logging comment

---------

Co-authored-by: YuhiAida <21134775+YuhiAida@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: nmzik <Nmzik@mail.ru>

src/launcher/src/configurationEditDialog.cpp

@@ -213,7 +213,7 @@ void ConfigurationEditDialog::Init(const Configuration& info) {
 #endif
 	QVulkanInstance instance;
 	instance.setApiVersion(QVersionNumber(1, 3, 0));
-#if !defined(__APPLE__)
+#if !defined(__APPLE__) && QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
 	instance.setFlags(QVulkanInstance::NoPortabilityDrivers);
 #endif
 	if (instance.create()) {