H1 to appear in the tree view and branching node

Not a major need or bug.

Want: To have the H1 content be reflected in a small card in the tree-view and the nodes in the branching view. I think it helps get a full picture of all the content and the structure :) But doesn't stop someone from their goals so its not urgent.

Example:
[no "Hello" in the tree-view]

[no "Hello" in the node]

Start by locating the tree-view and branching-view entry points in the platform-forms-client repository, then trace how page H1 content is exposed to each view. Done means the H1 appears in a small card in the tree view and on branching nodes, with the existing views continuing to work.

Written by the indexing model from the issue text.