fix(orders): show orders without users

[syedgalib]

PR Type

What kind of change does this PR introduce?

• Bugfix
• Security fix
• Improvement
• New Feature
• Refactoring (no functional changes, no api changes)
• Build related changes
• Text changes
• Other... Please describe:

Description

Use a left join for admin order customer data so orders remain visible when the referenced user is missing. Show safe guest and missing-account fallbacks in the admin orders table and order detail sidebar without creating invalid user links.

How to reproduce the issue or how to test the changes

1. Create or inspect orders for an existing user and for a guest, missing, or deleted user account.
2. Confirm every order remains visible in the admin orders table, valid users retain their profile links, and missing users show the fallback labels.
3. Open each order detail view and confirm customer information renders correctly without warnings or broken links.

Before after

https://prnt.sc/bKub3Fi4JN0M
orders no longer vanish from admin just because customer account data is missing.

Any linked issues

N/A

Checklist

• My code follows the WordPress coding standards

[RabbiIslamRony]

@syedgalib, please remove the build, blocks, and POT files. Also, resolve any merge conflicts.

[RabbiIslamRony]

Looks Good