[E2E] Fix ESLint issue with const/let parameter, remove .only for test

Author: elenaNaboko

tests/e2e/tests/regression/first-start-form/user-agreements-form.e2e.ts

@@ -12,7 +12,7 @@ fixture `Agreements Verification`
     .beforeEach(async t => {
         await t.maximizeWindow();
     });
-test.only('Verify that user can see message "While adding new visualization plugins, use files only from trusted authors to avoid automatic execution of malicious code." on EULA and Privacy Settings window when he opens the application for the very first time', async t => {
+test('Verify that user can see message "While adding new visualization plugins, use files only from trusted authors to avoid automatic execution of malicious code." on EULA and Privacy Settings window when he opens the application for the very first time', async t => {
     //Verify that User Agreements modal form is displayed
     await t.expect(userAgreementPage.userAgreementsPopup.exists).ok('User Agreements Popup is shown');
     //Verify that section with plugin warning is displayed

tests/e2e/tests/regression/workbench/scripting-area.e2e.ts

@@ -50,7 +50,7 @@ test('Verify that user can run multiple commands written in multiple lines in Wo
     await workbenchPage.sendCommandInWorkbench(commandsForSend.join('\n'), 0.5);
     //Check the result
     for(let i = 1; i < commandsForSend.length + 1; i++) {
-        let resultCommand = await workbenchPage.queryCardCommand.nth(i - 1).textContent;
+        const resultCommand = await workbenchPage.queryCardCommand.nth(i - 1).textContent;
         await t.expect(resultCommand).eql(commandsForSend[commandsForSend.length - i], `The command ${commandsForSend[commandsForSend.length - i]} is in the result`);
     }
 });
@@ -63,7 +63,7 @@ test('Verify that user can use double slashes (//) wrapped in double quotes and
     await workbenchPage.sendCommandInWorkbench(commandsForSend.join('\n"//"'), 0.5);
     //Check that all commands are executed
     for(let i = 1; i < commandsForSend.length + 1; i++) {
-        let resultCommand = await workbenchPage.queryCardCommand.nth(i - 1).textContent;
+        const resultCommand = await workbenchPage.queryCardCommand.nth(i - 1).textContent;
         await t.expect(resultCommand).contains(commandsForSend[commandsForSend.length - i], `The command ${commandsForSend[commandsForSend.length - i]} is in the result`);
     }
 });