[DREAM-703] FilterableTreeView does not keep default filter arguments

[HDinger]

What are you trying to accomplish?

Preserve defaults for filter_input_arguments

List the issues that this change affects.

https://community.openproject.org/wp/DREAM-703

Risk Assessment

• Low risk the change is small, highly observable, and easily rolled back.

[changeset-bot]

🦋 Changeset detected

Latest commit: cabb7af

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@openproject/primer-view-components	Patch

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[github-actions]

⚠️ Visual or ARIA snapshot differences found

Our visual and ARIA snapshot tests found UI differences. Please review the differences by viewing the files changed tab to ensure that the changes were intentional.

Review differences

[Copilot]

Pull request overview

This PR fixes Primer::OpenProject::FilterableTreeView so callers can pass partial filter_input_arguments overrides without having to manually merge in DEFAULT_FILTER_INPUT_ARGUMENTS, preserving expected default attributes (e.g., type=search, name=filter).

Changes:

• Change FilterableTreeView initializer to apply defaults via reverse_merge for filter_input_arguments (and for no_results_node_arguments as well).
• Update the component test to assert defaults are still present when only overriding a subset of filter_input_arguments.
• Simplify the preview example by removing explicit filter defaults that are now applied automatically.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

File	Description
app/components/primer/open_project/filterable_tree_view.rb	Applies default arguments via reverse_merge so partial overrides keep expected defaults.
test/components/primer/open_project/filterable_tree_view_test.rb	Updates test to validate partial override behavior while defaults remain intact.
previews/primer/open_project/filterable_tree_view_preview/custom_no_results_text.html.erb	Removes redundant explicit defaults in the preview now that defaults are preserved in the component.
.changeset/fancy-groups-kiss.md	Adds a patch changeset documenting the user-facing behavior fix.

[myabc]

Looks good! 👍🏻

nice to have: a simple (probably one-line) test for partial no_results_node_arguments merge.