Fix null quote issue

[Dinwy]

Description

This PR fix a critical issue where a null quote caused errors, which make user unable to pay when the user is not siged in, and includes translation updates.

Key Changes

Fix Null Cart Issue:

• Added if statement that checking quoteId exsits

        $lastRealQuoteId = $this->checkoutSession->getLastRealQuoteId();
        
        if (!$lastRealQuoteId) {
            $this->logger->info('No last real quote ID found');
            return;
        }
...

Observer Updates:

• New Observer: RestoreAfterCancel for restoring the quote when an order is canceled.
• Updated Observer: RestoreQuoteFromSession now checks and restores the last real quote when applicable, with improved logging.
• New Observer: SaveQuoteBeforeOrder to save the last real quote ID before order submission.

Plugin Enhancements:

• Updated WebhookEventProcessor.php to prepend external order numbers with translated payment methods.

Critical Fixes:

• Resolved an issue where $quote = $this->checkoutSession->getQuote(); was throwing an error due to a null quote, ensuring stable execution.

Translation Updates:

• Added translations for various payment methods in en_US.csv and ja_JP.csv. Now it will show what payment user used.
  Before: KOMOJU 外部注文ID:...
  After: KOMOJU - メルペイ 外部注文ID:...

Jul 25, 2024 4:43:47 PM Processing Customer Not Notified
KOMOJU - メルペイ 外部注文ID: 297-66a202310fa35 金額の支払いを受け取りました: 10 JPY

Jul 25, 2024 4:42:57 PM Processing Customer Not Notified
KOMOJU - クレジットカード決済 外部注文ID: 296-66a2020030c20 金額の支払いを受け取りました: 10 JPY