The header search block components log a missing plugin on install

Problem/Motivation

A fresh install logs eight warnings:

The "views_exposed_filter_block:search-header_search" block plugin was not found  x4
The "views_exposed_filter_block:search-date_block" block plugin was not found     x2
The "views_exposed_filter_block:search-results_block" block plugin was not found  x2

RightUp ships the header search Canvas block components as config files. A recipe imports its config before it runs its actions, so those components are created before the views displays their plugins derive from exist. Non-fatal, they resolve once the actions run, but they are noise on every install.

Steps to reproduce

1. Install a fresh site with the RightUp site template.
2. Read the log: drush watchdog:show --count=50.

Proposed resolution

Create canvas.component.block.views_exposed_filter_block.search-header_search and canvas.component.block.views_exposed_filter_block.search-page with createIfNotExists config actions instead of config files, so they are created after the views displays. Same change already made for the Category facet in #3624922 and for the equivalent components in Varbase Search Base.

Every drupal/varbase* constraint stays at x-dev on this branch; pinning belongs to the release issue.

Remaining tasks

• ✅ File an issue
• ❌ Addition/Change/Update/Fix
• ❌ Verify a fresh install on both Drupal CMS and Varbase 11 and confirm the warning count drops
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support
• ➖ User Guide Documentation support
• ➖ UX/UI designer responsibilities
• ➖ Accessibility and Readability
• ❌ Reviewed by a human
• ❌ Code review by maintainers
• ❌ Full testing and approval
• ❌ Credit contributors
• ❌ Review with the product owner
• ❌ Update Release Notes
• ❌ Release

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• The header search block components are now created by config actions, so a fresh install no longer logs missing block plugin warnings.