Add test data for parsing of complicated <..> and <..>= combinations

^KT-52684 Related
^KT-8263 Related

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java

@@ -31153,6 +31153,28 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
             }
         }
 
+        @Nested
+        @TestMetadata("compiler/testData/diagnostics/tests/syntax")
+        @TestDataPath("$PROJECT_ROOT")
+        public class Syntax {
+            @Test
+            public void testAllFilesPresentInSyntax() throws Exception {
+                KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/diagnostics/tests/syntax"), Pattern.compile("^(.+)\\.kt$"), Pattern.compile("^(.+)\\.fir\\.kts?$"), true);
+            }
+
+            @Test
+            @TestMetadata("complicatedLTGT.kt")
+            public void testComplicatedLTGT() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/syntax/complicatedLTGT.kt");
+            }
+
+            @Test
+            @TestMetadata("complicatedLTGTE.kt")
+            public void testComplicatedLTGTE() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/syntax/complicatedLTGTE.kt");
+            }
+        }
+
         @Nested
         @TestMetadata("compiler/testData/diagnostics/tests/syntheticExtensions")
         @TestDataPath("$PROJECT_ROOT")