By Jessica DiNapoli and Richa Naidu NEW YORK/LONDON (Reuters) – Makers of everyday staples from Pampers diapers to Dove soap are walking a fine line by continuing to sell their products in Russia, as pressure grows on multinational companies to take a stand against Russia’s recent invasion of Ukraine. McDonald’s Corp said on Tuesday it was closing its restaurants in Russia, including its iconic Pushkin Square location in Moscow. PepsiCo Inc, Coca-Cola Co and Starbucks Corp also stopped sales of their best-known products in Russia. But the world’s biggest makers of packaged food items and house…