Update test to account for "Add Documentation" action.

Author: DougGregor

Tests/SourceKitLSPTests/CodeActionTests.swift

@@ -383,7 +383,22 @@ final class CodeActionTests: XCTestCase {
       command: expectedCommand
     )
 
-    XCTAssertEqual(result, .codeActions([expectedCodeAction]))
+    guard case .codeActions(var resultActions) = result else {
+      XCTFail("Result doesn't have code actions: \(String(describing: result))")
+      return
+    }
+
+    // Filter out "Add documentation"; we test it elsewhere
+    if let addDocIndex = resultActions.firstIndex(where: {
+      $0.title == "Add documentation"}
+    ) {
+      resultActions.remove(at: addDocIndex)
+    } else {
+      XCTFail("Missing 'Add documentation'.")
+      return
+    }
+
+    XCTAssertEqual(resultActions, [expectedCodeAction])
   }
 
   func testCodeActionsRemovePlaceholders() async throws {