remove redundant cypress plugin

package.json

@@ -124,7 +124,6 @@
         "cross-env": "^7.0.3",
         "css-loader": "^6.8.1",
         "cypress": "^13.2.0",
-        "cypress-file-upload": "^5.0.8",
         "cypress-mailpit": "^0.0.4",
         "dotenv-webpack": "^8.0.1",
         "eslint": "^8.48.0",

test/e2e/frontend/cypress/support/commands.js

@@ -1,5 +1,4 @@
 import 'cypress-mailpit'
-import 'cypress-file-upload'
 
 // ***********************************************
 // This example commands.js shows you how to
@@ -269,16 +268,3 @@ Cypress.Commands.add('adminGetAllBlueprints', () => {
     cy.logout()
     cy.clearBrowserData()
 })
-
-Cypress.Commands.add('upload_file', (fileName, fileType = ' ', selector) => {
-    // eslint-disable-next-line cypress/require-data-selectors
-    cy.get(selector).then(subject => {
-        cy.fixture(fileName, 'base64').then(content => {
-            const el = subject[0]
-            const testFile = new File([content], fileName, { type: fileType })
-            const dataTransfer = new DataTransfer()
-            dataTransfer.items.add(testFile)
-            el.files = dataTransfer.files
-        })
-    })
-})

test/e2e/frontend/cypress/tests-ee/instances/assets.spec.js

@@ -158,14 +158,8 @@ describe('FlowForge - Instance - Assets', () => {
             cy.get('[data-el="upload-file-dialog"]').should('be.visible')
 
             cy.get('[data-el="upload-input"]').as('fileInput')
-
-            cy.fixture('files/rick.png').then(fileContent => {
-                cy.get('@fileInput').attachFile({
-                    fileContent: fileContent.toString(),
-                    fileName: 'rick.png',
-                    mimeType: 'image/png'
-                })
-            })
+            cy.fixture('files/rick.png').as('file')
+            cy.get('@fileInput').selectFile({ contents: '@file' }, { force: true }) // force because the input is hidden
 
             cy.intercept('POST', '/api/*/projects/*/files/_/*', '').as('uploadFile')
             interceptFiles(