This fix prevents planning data summaries from being forced into a more detailed grouping mode when that was not requested. It helps ensure Planning views and reports load grouped information consistently with the user's selected options.

Prior to this commit, the read_group lazy argument was forced to False
due to the read_group override.

The read_group override is only useful when the lazy argument is set to
False, the override is now executed when lazy argument has such
value.

read_group params in the super call are clarified to avoid any
ambiguity.

This commit fixes PR #19695 .

task-2633228

Fixes a problem that prevented users from opening detailed records from spreadsheet drill-downs after a recent platform change. This restores expected navigation from document spreadsheets, helping users inspect underlying business data without interruption.

Since 079e0ca8484aff245029bd908d3bec071a3f603f, drill down is broken
because the call to doAction has been updated.

Internal users can open and use document spreadsheets that include pivot tables without running into access errors. The change keeps spreadsheet filters and pivot information working while limiting the extra access to only the basic model details needed.

[task 2623460](https://www.odoo.com/web?debug=1#id=2623460&action=333&active_id=2328&model=project.task&view_type=form&cids=1&menu_id=4720)