Smarter flow to rule E6101 (#3583)

* Smarter flow to rule E6101
* better len value in W6001

Author: kddejong

src/cfnlint/rules/outputs/ImportValue.py

@@ -25,7 +25,7 @@ class ImportValue(CloudFormationLintRule):
     def validate(
         self, validator: Validator, s: Any, instance: Any, schema: Any
     ) -> Iterator[ValidationError]:
-        if len(validator.context.path.path) >= 2:
+        if len(validator.context.path.path) >= 3:
             if (
                 validator.context.path.path[0] == "Outputs"
                 and validator.context.path.path[2] == "Value"

src/cfnlint/rules/outputs/Value.py

@@ -37,25 +37,27 @@ def validate(self, validator: Validator, _: Any, instance: Any, schema: Any):
         condition = instance.get("Condition")
         if condition:
             conditions = {condition: True}
+
         validator = validator.evolve(
             context=validator.context.evolve(
                 functions=list(FUNCTIONS),
                 conditions=validator.context.conditions.evolve(
                     conditions,
                 ),
-                path=validator.context.path.descend(
-                    path=key,
-                    cfn_path=key,
-                ),
-            ),
+            )
+        )
+
+        for err in validator.descend(
+            value,
             schema={
                 "type": ["array", "string"],
                 "items": {
                     "type": "string",
                 },
             },
-        )
-
-        for err in self._iter_errors(validator, value):
-            err.path.appendleft(key)
+            path=key,
+            property_path=key,
+        ):
+            if err.rule is None:
+                err.rule = self
             yield err