Auto provide JDK_21_0 env variable to relevant tests

KTI-1229

buildSrc/src/main/kotlin/JvmToolchain.kt

@@ -23,7 +23,8 @@ enum class JdkMajorVersion(
     JDK_10_0(10, mandatory = false, overrideMajorVersion = 11),
     JDK_11_0(11, mandatory = false),
     JDK_16_0(16, mandatory = false),
-    JDK_17_0(17, mandatory = false);
+    JDK_17_0(17, mandatory = false),
+    JDK_21_0(21, mandatory = false);
 
     fun isMandatory(): Boolean = mandatory
 

compiler/fir/analysis-tests/build.gradle.kts

@@ -83,6 +83,9 @@ projectTest(
 projectTest(
     "jdk21Tests",
     jUnitMode = JUnitMode.JUnit5,
+    defineJDKEnvVariables = listOf(
+        JdkMajorVersion.JDK_21_0
+    )
 ) {
     configureTest {
         includeTags("Jdk21Test")

compiler/tests-common-new/build.gradle.kts

@@ -72,6 +72,9 @@ projectTest(
 projectTest(
     "jdk21Tests",
     jUnitMode = JUnitMode.JUnit5,
+    defineJDKEnvVariables = listOf(
+        JdkMajorVersion.JDK_21_0
+    )
 ) {
     configureTest {
         includeTags("Jdk21Test")