matrix field amends

[i-just]

Description

Fixed the following bugs for a matrix field with min and max entries set to 1:

• fixed a bug where the information on whether the field has staticElements wasn’t passed to the MatrixController::actionCreateEntry() causing the static “block” to have the “Delete” action
• fixed a bug where an error was thrown if you were creating a nested entry in a matrix field (in cards or element index view mode) and you clicked the “Create entry” button before the autosave kicked in.
• fixed a bug where if the matrix was in the cards view mode, the actions button wasn’t working when the nested element was first added (due to reliance on the deletable attribute check)

Related issues

#14904