Handle Array version in test run raw_results (#8618)

When tooling runners return version as an array instead of a scalar,
`raw_results[:version].to_i` raises NoMethodError. Use `Array()` to
safely unwrap the value before converting to integer.

Closes #8611

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: iHiD

app/models/submission/test_run.rb

@@ -13,7 +13,7 @@ class Submission::TestRun < ApplicationRecord
   delegate :solution, to: :submission
 
   before_create do
-    self.version = raw_results[:version].to_i
+    self.version = Array(raw_results[:version]).first.to_i
     self.message = raw_results[:message] unless self.message
     self.output = raw_results[:output] unless self.output
     self.status = raw_results.fetch(:status, :error) unless self.status

test/models/submission/test_run_test.rb

@@ -230,6 +230,11 @@ class Submission::TestRunTest < ActiveSupport::TestCase
     assert_equal submission.track, test_run.track
   end
 
+  test "handles version as array" do
+    tr = create(:submission_test_run, raw_results: { version: [3], status: :pass })
+    assert_equal 3, tr.version
+  end
+
   test "truncate message" do
     message = 'a' * 66_000
     test_run = create(:submission_test_run, raw_results: { message: })