Enhance query handling in FilterFormFactory and flare.js

[ericges]

This pull request updates how filter forms handle query parameters in both the frontend JavaScript and form factory. The main change is a switch from the generic data-flare-keep-query attribute to a more structured data-flare-form="keep-query" and the introduction of a dedicated selector for query fields. This improves clarity and maintainability in how forms preserve query parameters.

Frontend JavaScript and form attribute updates:

• Changed the attribute used to identify forms that should keep query parameters from data-flare-keep-query to data-flare-form="keep-query" in both the JavaScript selector and the form factory output (flare.js, FilterFormFactory.php). [1] [2]
• Updated the JavaScript logic in flare.js to use a new selector for query fields: [data-flare-form="query-field"], ensuring that any fields with this attribute are properly managed when cleaning up query parameters. [1] [2]

[heimrich-hannot]

wonderful

[Copilot]

Pull request overview

This PR updates the “keep query params on GET filter forms” behavior by replacing the legacy data-flare-keep-query marker with a structured data-flare-form="keep-query" attribute, and extends the query cleanup logic to also remove explicitly marked query fields.

Changes:

• Update the Symfony form factory output to render data-flare-form="keep-query" on generated filter forms.
• Update flare.js to target the new keep-query attribute and additionally delete query params for fields marked with data-flare-form="query-field".

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/Form/Factory/FilterFormFactory.php	Updates generated filter form attributes to use data-flare-form="keep-query".
public/frontend/flare.js	Updates the selector and deletion logic to support structured form/query-field markers.

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