[DH/Editor] : Sort by changeDate by default

[cmoinier]

Description

This PR ensures that both editor and datahub search/landing pages sort their results by changeDate and not by relevancy.
It also makes sure to revert back to a sorting by relevancy when a full text search is done.

Quality Assurance Checklist

• Commit history is devoid of any merge commits and readable to facilitate reviews
• If new logic ⚙️ is introduced: unit tests were added
• If new user stories 🤏 are introduced: E2E tests were added
• If new UI components 🕹️ are introduced: corresponding stories in Storybook were created
• If breaking changes 🪚 are introduced: add the breaking change label
• If bugs 🐞 are fixed: add the backport <release branch> label
• The documentation website 📚 has received the love it deserves

[github-actions]

Affected libs: common-domain, api-metadata-converter, api-repository, feature-catalog, feature-record, feature-router, feature-search, feature-map, feature-dataviz, feature-editor, feature-auth, ui-search, common-fixtures, ui-elements, feature-notifications, ui-catalog, util-shared, ui-widgets, ui-inputs, ui-layout, ui-map, ui-dataviz,
Affected apps: metadata-converter, metadata-editor, datahub, demo, webcomponents, search, map-viewer, datafeeder, data-platform,

• 🚀 Build and deploy storybook and demo on GitHub Pages
• 📦 Build and push affected docker images

[github-actions]

📷 Screenshots are here!

[coveralls]

coverage: 83.363% (-0.5%) from 83.88%
when pulling ab1960b on sort-by-last-date
into 09f416f on main.

[jahow]

Thanks! I think there might be a better way to do this. This PR will immediately put a _sort parameter in the URL if none is present. The previous behavior (when using the router) was to fall back to relevancy because of this code:
https://github.com/geonetwork/geonetwork-ui/blob/main/libs/feature/router/src/lib/default/state/router.effects.ts#L64

I think we can change that to CHANGE_DATE, so we can have the datahub or editor load without a _sort parameter showing up.

Also the sort-by component should offer CHANGE_DATE alongside CREATE_DATE I guess:
https://github.com/geonetwork/geonetwork-ui/blob/main/libs/feature/search/src/lib/sort-by/sort-by.component.ts

(the create date criteria can be kept under the name "Newest" and change date can be "Last modification")

[jahow]

Thank you! two minor comments to address and it's good to merge :)