Race condition when initializing ProcessConsoleManager.fColorProviders

[trancexpress]

Seen in the latest fail for #596, see: #596 (comment)

To reproduce:

1. Set a breakpoint at: org.eclipse.debug.internal.ui.views.console.ProcessConsoleManager.getColorProvider(String)
2. Debug Eclipse, make sure the Console view is open.
3. In the debuggee, create a snippet:

public class Test3 {

	public static void main(String[] args) throws InterruptedException {
		Thread.sleep(60_000);
	}
}

4. Launch this snippet twice.
5. Observe two threads suspended at the breakpoint:

"Worker-2: Creating console for /usr/lib/jvm/java-21-openjdk/bin/java (Apr 30, 2026, 11:28:57 AM) [pid: 53966]" #74 [51843] prio=5 os_prio=0 cpu=31.67ms elapsed=118.72s tid=0x00007f8f9c0068a0 nid=51843 at breakpoint [0x00007f8fc99fb000]
   java.lang.Thread.State: RUNNABLE
        at org.eclipse.debug.internal.ui.views.console.ProcessConsoleManager.getColorProvider(ProcessConsoleManager.java:262)
        at org.eclipse.debug.internal.ui.views.console.ProcessConsoleManager$ConsoleCreation.run(ProcessConsoleManager.java:72)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

"Worker-5: Creating console for /usr/lib/jvm/java-21-openjdk/bin/java (Apr 30, 2026, 11:28:51 AM) [pid: 53920]" #77 [51846] prio=5 os_prio=0 cpu=67.00ms elapsed=118.72s tid=0x00007f8fc00041b0 nid=51846 at breakpoint [0x00007f8fc9dfd000]
   java.lang.Thread.State: RUNNABLE
        at org.eclipse.debug.internal.ui.views.console.ProcessConsoleManager.getColorProvider(ProcessConsoleManager.java:262)
        at org.eclipse.debug.internal.ui.views.console.ProcessConsoleManager$ConsoleCreation.run(ProcessConsoleManager.java:72)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

6. Both are at the same object, e.g.: org.eclipse.debug.internal.ui.views.console.ProcessConsoleManager@2b14b28c

See also screen recording from the reproduction:

vokoscreenNG-2026-04-30_11-32-29.mp4

[trancexpress]

What I'm seeing while debugging in #596, is actually getting two different fDefaultColorProvider from ProcessConsoleManager.getColorProvider(String)... Which makes things confusing. I'm also not sure what problems can occur with parallel HashMap.put().