ProjectExplorer: Allow to schedule a build/run during a project parse

Once we parsed the project initially, subsequent parses typically do not
change things in a major way, so we can expect e.g. run configurations to
stay intact.
It therefore makes sense to allow users to schedule an
application run not only during a build (see 4b92b7ac60), but also
during a parse. Arguably, this is even more relevant, as parsing is
usually not triggered directly by the user, but happens as a side effect
of editing a document or switching a branch. It is then annoying for
users to have to wait until the respective buttons get enabled again.

Fixes: QTCREATORBUG-24986
Change-Id: I1081ccde668eee794c39b96cd0bad5c3aaa580bc
Reviewed-by: hjk <hjk@qt.io>

src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp

@@ -231,11 +231,8 @@ QString QmlProjectRunConfiguration::commandLineArguments() const
 
 bool QmlProjectRunConfiguration::isEnabled() const
 {
-    if (m_qmlMainFileAspect->isQmlFilePresent() && !commandLine().executable().isEmpty()) {
-        BuildSystem *bs = activeBuildSystem();
-        return !bs->isParsing() && bs->hasParsingData();
-    }
-    return false;
+    return m_qmlMainFileAspect->isQmlFilePresent() && !commandLine().executable().isEmpty()
+            && activeBuildSystem()->hasParsingData();
 }
 
 QString QmlProjectRunConfiguration::mainScript() const