Adds documentation guidance for the GSTIN status feature in the India localization settings. This helps users understand where to find official information and how the feature supports GST compliance workflows.

task-4143187

Related PR
- https://github.com/odoo/documentation/pull/11324

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The editor’s insert option now uses the clearer name “Media” instead of “Image,” matching the media selection dialog and better reflecting that it can handle more than images. Users can still find it by searching for image or icon, while video insertion remains available through the media dialog where enabled.

This commit:
- renames the Image command to Media to better reflect its broader functionality and match the dialog's title ("Select a media").
- adds search keywords so that both "image" and "icon" are aliases to the Media command, improving discoverability.
- removed the Video command as it is currently not used in html_field (it is still available as a tab in the media dialog when the "disableVideo" option is set to false, effectively merging the Video command into the Media command).

task-4264248

This update marks the mail mailbox route as read-only, helping the system handle mailbox-related requests more efficiently. It is a behind-the-scenes improvement that can reduce unnecessary database overhead without changing the user experience.

Attendance Gantt and list views now hide archived employees by default. This keeps workforce planning screens focused on current staff and reduces clutter for managers reviewing attendance schedules.

With this commit, by default, The gantt view and list view don't dispayed archived employees.

task-4208052