Simulate a paste event in Cypress

paste.js

/**
 * Simulates a paste event.
 *
 * @param pasteOptions Set of options for a simulated paste event.
 * @param pasteOptions.destinationSelector Selector representing the DOM element that the paste event should be dispatched to.
 * @param pasteOptions.pastePayload Simulated data that is on the clipboard.
 * @param pasteOptions.pasteFormat The format of the simulated paste payload. Default value is 'text'.
 */
function paste({ destinationSelector, pastePayload, pasteType = 'text' }) {
    // https://developer.mozilla.org/en-US/docs/Web/API/Element/paste_event
    cy.get(destinationSelector).then($destination => {
        const pasteEvent = Object.assign(new Event('paste', { bubbles: true, cancelable: true }), {
            clipboardData: {
                getData: (type = pasteType) => pastePayload,
            },
        });
        $destination[0].dispatchEvent(pasteEvent);
    });
}

Cypress version: 13.13.2

What worked for me is more of a workaround but still uses the copied clipboard from cypress itself.
Get the copied value from the cypress window, alias it and then type it or perform some assertions on it.

    cy.window().then((win) => {
        return cy.wrap(win.navigator.clipboard.readText()).then((clipboardText) => {
            const expectedText = 'Your expected text, if known previously for assertion';
            expect(clipboardText).to.equal(expectedText);
            // Save the clipboard to "paste" it later
            cy.wrap(clipboardText).as('copiedText');
        });
    });
    cy.get('@copiedText').then((copiedText) => {
        // Use copiedText as needed, use .type() to simulate "paste" if you work with strings
        cy.log(copiedText);
    });