Media & text: filter render_block missing link attributes (href, rel and classes)

[Moooartin]

Description

The attributes passed to filter render_block for core/media-text block are missing the link attributes if it is inserted.

Step-by-step reproduction instructions

Add a media-text block, then insert a link through the toolbar, modify or not the options.
Use the render_block filter to see the block arguments.

Actual behaviour

Using render_block the only new attribute available, if you inserted a link, is ["linkDestination"] => (string) "custom"

Expected behaviour

To have access to all link "arguments", the real href link, the rel attribute and the classes if they are defined.
maybe something like this:

["linkDestination"] => (string) "htps://....."
["linkRel"] => (string) "......"
["linkClasses"] => (string) "......"

WordPress information

• WordPress version: 5.7

[getdave]

Removing LinkEditing because this is a Media Text block issue.