Update icon settings in auth_oidc

[Lai Wei (weilai-irl)]

No description provided.

[Copilot]

Pull request overview

Updates the auth_oidc plugin’s icon configuration and assets so admins can choose from a smaller set of OIDC-relevant icons, with an upgrade path to preserve previously selected (now-removed) core Moodle icon choices.

Changes:

• Replaced the icon selector options with new OIDC-related icons and updated the default icon.
• Added new icon assets and a migration routine to preserve removed icon selections by copying them into the custom icon area.
• Updated custom icon handling to avoid stale-extension precedence by deleting old customicon.* files before copying the new upload.

Reviewed changes

Copilot reviewed 8 out of 15 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
auth/oidc/version.php	Bumps plugin version (currently as a decimal).
auth/oidc/settings.php	Updates icon selector options/default; updates custom icon accepted types.
auth/oidc/pix/openid.svg	Adds OpenID icon asset.
auth/oidc/pix/office_365.svg	Adds Office 365 icon asset.
auth/oidc/pix/microsoft.svg	Adds Microsoft icon asset.
auth/oidc/pix/microsoft_365.svg	Adds Microsoft 365 icon asset.
auth/oidc/pix/microsoft_365_copilot.svg	Adds Microsoft 365 Copilot icon asset.
auth/oidc/lib.php	Updates custom icon cache file handling (extension-aware, removes stale files).
auth/oidc/lang/en/auth_oidc.php	Updates/introduces icon alt strings and custom icon description.
auth/oidc/db/upgrade.php	Adds upgrade step to migrate removed icon choices.
auth/oidc/classes/utils.php	Implements migration helper for removed icon choices.
auth/oidc/classes/loginflow/authcode.php	Updates default icon and tweaks IDP display name spacing when icon is shown.
auth/oidc/classes/adminsetting/iconselect.css	Adjusts icon selector image styling.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.