Custom Block Preview - Clicking Preview opens EditBlock

Thanks @nielslyngsoe I missed that config property !
This is a useful approach to solve our problem, I have just added some CSS styling in the component like so

CSS for < a > tag

a.edit {
    display:block;
    text-decoration: none;
    color: inherit;
}

Full example

import { UmbBlockDataType } from "@umbraco-cms/backoffice/block";
import { UmbBlockEditorCustomViewConfiguration, UmbBlockEditorCustomViewElement } from "@umbraco-cms/backoffice/block-custom-view";
import { UmbElementMixin } from "@umbraco-cms/backoffice/element-api";
import { css, customElement, html, LitElement, property, unsafeHTML } from "@umbraco-cms/backoffice/external/lit";
import { BackofficeCssStyles } from "../../common/styles/backoffice-css-styles";
import { RTEData } from "../../common/types/rte";

interface ParagraphBlockContent extends UmbBlockDataType {
    richText: RTEData;
}

@customElement('paragraph-block-view')
export class ParagraphBlockViewElement extends UmbElementMixin(LitElement) implements UmbBlockEditorCustomViewElement {

    @property({attribute: false})
    label?: string;

    @property({attribute: false})
    content?: ParagraphBlockContent;

    @property({attribute: false})
    settings?: UmbBlockDataType;

    @property({ attribute: false })
    config?: UmbBlockEditorCustomViewConfiguration;
    
    render() {
        return html`
            <fieldset>
                <legend>${this.label ?? 'Paragraph'}</legend>
                <a href=${this.config?.editContentPath ?? ''} class="edit">
                    ${unsafeHTML(this.content?.richText.markup)}
                </a>
            </fieldset>
        `;
    }

    static styles = [
        BackofficeCssStyles,
        css `
            a.edit {
                display:block;
                text-decoration: none;
                color: inherit;
            }
        `
    ]
}

export default ParagraphBlockViewElement;

declare global {
    interface HTMLElementTagNameMap {
        'paragraph-block-view': ParagraphBlockViewElement;
    }
}