Add Test: oracle submit_result emits correct event data for all result types

[yahia008]

Priority: Medium
Estimated Time: 30 minutes

Description:
test_submit_result_emits_event in the oracle tests verifies the event is emitted but only checks Player1Wins. No test covers Player2Wins or Draw result events.

Tasks:

• Add test for MatchResult::Player2Wins event emission
• Add test for MatchResult::Draw event emission
• Assert match_id and result in event data are correct for each case

[Danielodingz]

@Danielodingz has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

Hello maintainer, please i would like to work on this issue.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Danielodingz to this issue.