KTOR-8091 Fix ktor-client-curl publishing

[osipxd]

Subsystem
Infrastructure

Motivation
KTOR-8091 ktor-client-curl artifacts aren’t published after EAP 1146

Solution
Aggregating tasks relay on the flags declared in TargetsConfig. Unfortunately, these flags were out of sync a bit (#4616 should fix this problem) and this caused ktor-client-curl not to be published.

private fun Project.configureAggregatingTasks() {
    // ...
    // These three were false if only "desktop" source-set is present.
    if (hasLinux) registerAggregatingTask("Linux", linuxTargets)
    if (hasWindows) registerAggregatingTask("Windows", windowsTargets)
    if (hasDarwin) registerAggregatingTask("Darwin", darwinTargets)
    // ...
}

[bjhham]

I think we need a Venn diagram for all these targets 😂

[osipxd]

I think we need a Venn diagram for all these targets 😂

After #4616 it won't be needed anymore. I've implemented programmatic tracking of relations between targets and their groups.