Refactor event processing in tests for chronological order

- Updated test files to collect events first and sort them by their CreatedAt timestamp before processing, ensuring events are handled in chronological order.
- Removed redundant error checks for scanner errors after event processing.
- Enhanced clarity and maintainability of event handling in tests across multiple files, including export, fetch, and query tests.
- Adjusted expected index counts in tests to reflect changes in event structure and processing logic.

pkg/encoders/json/v2_stream.go

@@ -10,8 +10,8 @@ import (
 	"bytes"
 	"io"
 
-	"encoding/json/jsontext"
-	jsonv2 "encoding/json/v2"
+	"next.orly.dev/pkg/json/jsontext"
+	jsonv2 "next.orly.dev/pkg/json/v2"
 )
 
 // A Decoder reads and decodes JSON values from an input stream.