Feature: Hide entity actions when Tree used inside a Modal

[leekelleher]

Description

@madsrasmussen @nielslyngsoe As discussed recently, a proposed PR.

Adds a flag to the umb-tree to hide the tree-item's entity actions. This can be useful when using a tree-picker modal and don't want to enable the user to access the entity actions.

As for whether the the larger feature of "why not?" allow content-managers to run actions within pickers, we can discuss and explore further.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (minor updates related to the tooling or maintenance of the repository, does not impact compiled assets)

[madsrasmussen]

Looks good to me