test: skip SwapDetailsDropdown tests (#6652)

* test: skip SwapDetailsDropdown tests

Tests depend on network requests, which may cause flakiness.
These tests should have the network requests mocked, then be re-enabled.

* add TODO

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Co-authored-by: cartcrom <cartergcromer@gmail.com>

src/components/swap/SwapDetailsDropdown.test.tsx

@@ -4,7 +4,8 @@ import { act, render, screen } from 'test-utils/render'
 
 import SwapDetailsDropdown from './SwapDetailsDropdown'
 
-describe('SwapDetailsDropdown.tsx', () => {
+// TODO(WEB-2120): Reenable tests after mocking trade fetch in this file
+describe.skip('SwapDetailsDropdown.tsx', () => {
   it('renders a trade', () => {
     const { asFragment } = render(
       <SwapDetailsDropdown