[python] PY-83029 fix compatibility inspection tests

`testBreakInFinallyBlock` and `testReturnInFinallyBlock`
were testing vs. latest language level, so apart from
the compatibility warning (for which these tests are
intended) - a corresponding syntax error was captured

I made these tests to use a specific language level
so they only verify the correctness of the compatibility
inspection and introduced four tests in `PythonHighlightingTest`
to capture the syntax error


(cherry picked from commit 254570dc4d5022176590377eaf8ea6a08917937a)

IJ-MR-182362

GitOrigin-RevId: fb9c92923820b370672451c5753ee24bdd5a4570

python/testSrc/com/jetbrains/python/PythonHighlightingTest.java

@@ -97,6 +97,26 @@ public class PythonHighlightingTest extends PyTestCase {
     doTest(LanguageLevel.PYTHON38, false, false);
   }
 
+  // PY-80237
+  public void testBreakInFinallyBlockBefore314() {
+    doTest(LanguageLevel.PYTHON313, false, false);
+  }
+
+  // PY-80237
+  public void testBreakInFinallyBlock() {
+    doTest(LanguageLevel.PYTHON314, false, false);
+  }
+
+  // PY-80237
+  public void testReturnInFinallyBlockBefore314() {
+    doTest(LanguageLevel.PYTHON313, false, false);
+  }
+
+  // PY-80237
+  public void testReturnInFinallyBlock() {
+    doTest(LanguageLevel.PYTHON314, false, false);
+  }
+
   public void testReturnWithArgumentsInGenerator() {
     doTest();
   }

python/testSrc/com/jetbrains/python/inspections/Py3CompatibilityInspectionTest.java

@@ -16,29 +16,34 @@
 package com.jetbrains.python.inspections;
 
 import com.jetbrains.python.fixtures.PyInspectionTestCase;
+import com.jetbrains.python.psi.LanguageLevel;
 import org.jetbrains.annotations.NotNull;
 
 public class Py3CompatibilityInspectionTest extends PyInspectionTestCase {
 
   // PY-80237
   public void testBreakInFinallyBlock() {
-    doTestByText("""
-                 while True:
-                   try:
-                     print("a")
-                   finally:
-                     <error descr="Python version 3.15 does not support 'break' inside 'finally' clause">break</error>"""
+    runWithLanguageLevel(
+      LanguageLevel.PYTHON313,
+      () -> doTestByText("""
+        while True:
+          try:
+            print("a")
+          finally:
+            <warning descr="Python versions 3.14, 3.15 do not support 'break' inside 'finally' clause">break</warning>""")
     );
   }
 
   // PY-80237
   public void testReturnInFinallyBlock() {
-    doTestByText("""
-                 def foo():
-                   try:
-                     pass
-                   finally:
-                     <error descr="Python version 3.15 does not support 'return' inside 'finally' clause">return</error>"""
+    runWithLanguageLevel(
+      LanguageLevel.PYTHON313,
+      () -> doTestByText("""
+        def foo():
+          try:
+            pass
+          finally:
+            <warning descr="Python versions 3.14, 3.15 do not support 'return' inside 'finally' clause">return</warning>""")
     );
   }