Fix off-by-one error in --rerun-each loop condition

The previous fix changed the loop condition from < to <=, which caused
an off-by-one error where --rerun-each N would run N+1 tests instead of N.

This change reverts the loop condition back to < repeat_count, which is
the correct behavior since repeat_index starts at 0.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/cli/test_command.zig

@@ -1829,7 +1829,7 @@ pub const TestCommand = struct {
         // Count each file only once, regardless of repeat count
         reporter.summary().files += 1;
 
-        while (repeat_index <= repeat_count) : (repeat_index += 1) {
+        while (repeat_index < repeat_count) : (repeat_index += 1) {
             reporter.jest.current_file.set(file_title, file_prefix, repeat_count, repeat_index);
 
             var promise = try vm.loadEntryPointForTestRunner(file_path);