Add test to demonstrate issue #964 - Data Table column ignored without closing delimiter

Co-authored-by: 304NotModified <5808377+304NotModified@users.noreply.github.com>

Author: Copilot

Tests/Reqnroll.Specs/Features/Parser/ParsingErrors.feature

@@ -159,3 +159,18 @@ Scenario: Duplicated background
 		| line | error             |
 		| 6    | got 'Background:' |
 
+Scenario: Table header without trailing delimiter
+	Given there is a Gherkin file as
+	"""
+		Feature: Table without trailing delimiter
+
+		Scenario: Table without trailing delimiter
+			Given a table
+				| EffectiveDate | InterestRate
+				| 1999-01-01    | 10.00        |
+	"""
+	When the file is parsed
+	Then the following errors are provided
+		| line | error                                    |
+		| 6    | inconsistent cell count within the table |
+