PY-33656 Properly align f-string nodes joined using backslashes

python/src/com/jetbrains/python/formatter/PyBlock.java

@@ -295,7 +295,7 @@ public class PyBlock implements ASTBlock {
       }
     }
     else if (parentType == PyElementTypes.STRING_LITERAL_EXPRESSION) {
-      if (PyTokenTypes.STRING_NODES.contains(childType)) {
+      if (PyTokenTypes.STRING_NODES.contains(childType) || childType == PyElementTypes.FSTRING_NODE) {
         childAlignment = getAlignmentForChildren();
       }
     }

python/testData/formatter/backslashGluedFStringNodesAlignment.py

@@ -0,0 +1,2 @@
+string_literal = f'foo' \
+                 f'bar'

python/testData/formatter/backslashGluedFStringNodesAlignment_after.py

@@ -0,0 +1,2 @@
+string_literal = f'foo' \
+                 f'bar'

python/testSrc/com/jetbrains/python/PyEditingTest.java

@@ -126,13 +126,13 @@ public class PyEditingTest extends PyTestCase {
 
   public void testEnterInFStringTextPart() {
     doTestEnter("f'foo<caret>bar'", "f'foo' \\\n" +
-                                    "    f'bar'");
+                                    "f'bar'");
   }
 
   // PY-31984
   public void testEnterInFStringRightBeforeFragment() {
     doTestEnter("f'foo<caret>{42}bar'", "f'foo' \\\n" +
-                                        "    f'{42}bar'");
+                                        "f'{42}bar'");
   }
 
   // PY-32918

python/testSrc/com/jetbrains/python/PyFormatterTest.java

@@ -931,6 +931,11 @@ public class PyFormatterTest extends PyTestCase {
     runWithLanguageLevel(LanguageLevel.PYTHON36, this::doTest);
   }
 
+  // PY-33656
+  public void testBackslashGluedFStringNodesAlignment() {
+    doTest();
+  }
+
   // PY-31991
   public void testSpacesAroundFStringFragmentExpressionStripped() {
     runWithLanguageLevel(LanguageLevel.PYTHON36, this::doTest);