chore: skip flaky system tests (#27533)

system-tests/test/cdp_spec.ts

@@ -20,5 +20,6 @@ describe('e2e cdp', function () {
     project: 'remote-debugging-disconnect',
     spec: 'spec.cy.ts',
     browser: 'chrome',
+    skip: true, // TODO: Investigate and unskip flaky test
   })
 })

system-tests/test/screenshot_fullpage_capture_spec.js

@@ -24,5 +24,6 @@ describe('e2e screenshot fullPage capture', () => {
   systemTests.it('passes', {
     spec: 'screenshot_fullpage_capture.cy.js',
     snapshot: true,
+    browser: '!firefox', // This test is flaky on Firefox
   })
 })