* fix(PaLM2): input losing focus on message stream ending
* fix(askOpenAI.js): fix typo in variable name from newUserMassageId to newUserMessageId
* feat(chatgpt-browser.js, askBingAI.js, askChatGPTBrowser.js): add onEventMessage callback to browserClient
Add onEventMessage callback to browserClient to handle event messages from the server. In askChatGPTBrowser.js, add a getPartialMessage variable to store the partial message text. In askBingAI.js, fix a typo in the variable name newUserMassageId to newUserMessageId. In askChatGPTBrowser.js, remove the preSendRequest parameter and move the sendMessage call to the onEventMessage callback. In askChatGPTBrowser.js, add a check for null or undefined value of getPartialMessage before appending it to the error message.
* fix(bing): input no longer loses input focus as convoId is persisted from beginning of convo
* refactor(Input): remove unused code and fix input autofocus
feat(package.json): add e2e:test-auth script to test authentication flow with saved storage
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