Ignore invalid sections in MergeAndOrderSections

docs/releasenotes/4.4.1.rst

@@ -21,3 +21,5 @@ Robot Framework 6.1 fixes (#550)
 
 - ``Translate`` transformer should now properly handle creating Comments section (if needed),
 - Missing settings translations should now be ignored by ``Translate`` transformer,
+- Files with invalid sections (for example unrecognized translated section names) should be ignored by
+  ``MergeAndOrderSections``

robotidy/transformers/MergeAndOrderSections.py

@@ -11,6 +11,10 @@
     from robot.api.parsing import Config  # from RF 6.0
 except ImportError:
     Config = None
+try:
+    from robot.parsing.model import InvalidSection  # from RF 6.1
+except ImportError:
+    InvalidSection = None
 from robotidy.transformers import Transformer
 
 
@@ -119,6 +123,8 @@ def visit_File(self, node):  # noqa
         for index, section in enumerate(node.sections):
             if index == last:
                 section = self.from_last_section(section)
+            if InvalidSection and isinstance(section, InvalidSection):
+                return node
             section_type = self.get_section_type(section)
             if section_type not in sections:
                 sections[section_type] = section

tests/atest/transformers/MergeAndOrderSections/source/invalid.robot

@@ -0,0 +1,5 @@
+*** Ustawienia ***
+
+*** Testy ***
+Test
+    No Operation

tests/atest/transformers/MergeAndOrderSections/test_merge_and_order_sections.py

@@ -79,3 +79,6 @@ def test_disablers(self):
 
     def test_translated(self):
         self.compare(source="translated.robot", target_version=">=6")
+
+    def test_invalid(self):
+        self.compare(source="invalid.robot", not_modified=True, target_version=">=6.1")