fix widget config immutability

[persd]

No description provided.

[Copilot]

Pull request overview

This PR addresses widget config immutability in the Grid Widget component by avoiding in-place mutation of the incoming widgetConfig object, while preserving existing runtime behavior (grid location assignment, CSS class derivation, and hide-widget behavior).

Changes:

• Clone widgetConfig before augmenting it with gridLocation and potentially updating customClass.
• Update the rendering logic to consistently use the cloned config (widgetConfigCopy).
• Bump package version from 4.9.0 to 4.9.1.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/components/Grid/Widget.astro	Stops mutating widgetConfig in-place by cloning it, then uses the clone for gridLocation/class logic and rendering.
package.json	Version bump to 4.9.1 to release the immutability fix.