Disable JnlpSlaveRestarterInstallerTest on Windows CI agents (jenki…

…nsci#10195)

The tests have failed consistently on Windows agents of ci.jenkins.io
since we switched to virtual machines instead of containers.  The tests
fail on the stable-2.479, stable-2.492, and master branches.  The tests
do not fail when run on my Windows 10 and Windows 11 computers in my
home lab.

Needs more investigation, but I would rather not block the 2.492.1
release candidate build for that investigation.

Makes the stable-2.492 branch consistent with the master branch

(cherry picked from commit 698c624)

test/src/test/java/jenkins/slaves/restarter/JnlpSlaveRestarterInstallerTest.java

@@ -58,24 +58,24 @@ public class JnlpSlaveRestarterInstallerTest {
     @Issue("JENKINS-19055")
     @Test
     public void tcpReconnection() throws Throwable {
-        // TODO Enable when test is reliable on Windows
+        // TODO Enable when test is reliable on Windows agents of ci.jenkins.io
         // When builds switched from ACI containers to virtual machines, this test consistently failed
         // When the test is run on local Windows computers, it passes
         // Disable the test on ci.jenkins.io and friends when running Windows
         // Do not disable for Windows developers generally
-        assumeFalse(Functions.isWindows() && JENKINS_URL.contains("ci.jenkins.io"));
+        assumeFalse("TODO: Test fails on Windows VM", Functions.isWindows() && System.getenv("CI") != null);
         reconnection(false);
     }
 
     @Issue("JENKINS-66446")
     @Test
     public void webSocketReconnection() throws Throwable {
-        // TODO Enable when test is reliable on Windows
+        // TODO Enable when test is reliable on Windows agents of ci.jenkins.io
         // When builds switched from ACI containers to virtual machines, this test consistently failed
         // When the test is run on local Windows computers, it passes
         // Disable the test on ci.jenkins.io and friends when running Windows
         // Do not disable for Windows developers generally
-        assumeFalse(Functions.isWindows() && JENKINS_URL.contains("ci.jenkins.io"));
+        assumeFalse("TODO: Test fails on Windows VM", Functions.isWindows() && System.getenv("CI") != null);
         reconnection(true);
     }