Allow saving blueprints with validation errors

[lauraneto]

Fixes #19506

The style changes were based on UmbDocumentWorkspaceContext._handleSave().
Since we only want to show warnings, and never errors, the document-blueprint-workspace-editor host element styles was adjusted instead.

In order to test, create a blueprint from a document type with a required field and attempt to save the blueprint without filling in that field.

[Copilot]

Pull Request Overview

This PR enables saving document blueprints even when they contain validation errors, addressing issue #19506. The changes allow blueprints to be saved with required fields left empty, while displaying validation issues as warnings rather than blocking errors.

• Adds ignoreValidationResultOnSubmit: true to the blueprint workspace context configuration
• Updates CSS custom properties to display validation errors as warnings using warning colors instead of error colors

Reviewed Changes

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

File	Description
document-blueprint-workspace.context.ts	Configures the workspace to ignore validation results during submission
document-blueprint-workspace-editor.element.ts	Updates CSS variables to display validation errors as warnings with warning colors

[Copilot]

Overriding the semantic meaning of 'invalid' colors to use warning colors could be confusing for developers and users. Consider creating blueprint-specific CSS custom properties (e.g., --uui-color-blueprint-validation) to maintain semantic clarity while achieving the desired visual styling.

Suggested change

	--uui-color-invalid: var(--uui-color-warning);
	--uui-color-invalid-emphasis: var(--uui-color-warning-emphasis);
	--uui-color-invalid-standalone: var(--uui-color-warning-standalone);
	--uui-color-invalid-contrast: var(--uui-color-warning-contrast);
	--uui-color-blueprint-validation: var(--uui-color-warning);
	--uui-color-blueprint-validation-emphasis: var(--uui-color-warning-emphasis);
	--uui-color-blueprint-validation-standalone: var(--uui-color-warning-standalone);
	--uui-color-blueprint-validation-contrast: var(--uui-color-warning-contrast);