Improvements related to Assistant prompt limit

[fluiddot]

Related to 9081-gh-Automattic/dotcom-forge.

Proposed Changes

• Update the default value of the prompt limit to 200 (defined in constant LIMIT_OF_PROMPTS_PER_USER). This value matches the one defined in WPCOM.
• In the unauthenticated view of the Assistant tab, use the constant LIMIT_OF_PROMPTS_PER_USER to render the value.
• Ensure prompt usage is fetched when switching accounts. This was a bug I spotted when testing this PR, the prompt usage never updated despite logging in with different accounts.
• Fix styles of Try again button displayed when getting a failed message in Assistant. Now the button is separated from the error message as defined in the designs.

Original design:

Testing Instructions

Important

Use D161624-code for properly testing this PR.

Prompt limit

• Run the app with the command npm start.
• Log in to WPCOM with an A8C account.
• Open the settings panel.
• Observe in the AI assistant section that the max monthly prompts is 1000.
• Log out from WPCOM.
• Navigate to the Assistant tab.
• Observe the message mentions that accounts get 200 prompts for free each month.

• Log in with a non-A8C account.
• Open the settings panel.
• Observe in the AI assistant section that the max monthly prompts is 200.

Try again button

• Apply the following patch:

diff --git forkSrcPrefix/src/components/content-tab-assistant.tsx forkDstPrefix/src/components/content-tab-assistant.tsx
index 2736c84ca14a61ad1ddc3d58651829ad9da4082c..6c5e0b51e957484139d815b6718d95e7c72f317c 100644
--- forkSrcPrefix/src/components/content-tab-assistant.tsx
+++ forkDstPrefix/src/components/content-tab-assistant.tsx
@@ -166,9 +166,7 @@ export const AuthenticatedView = memo(
 					>
 						{ message.content }
 					</ChatMessage>
-					{ message.failedMessage && (
-						<ErrorNotice handleSend={ handleSend } messageContent={ message.content } />
-					) }
+					{ true && <ErrorNotice handleSend={ handleSend } messageContent={ message.content } /> }
 				</>
 			),
 			[ handleSend, siteId, updateMessage ]

• Log in to WPCOM with an A8C account.
• Navigate to the Assistant tab.
• Submit a prompt.
• Observe an error notice is displayed below the prompt.
• Observe the Try again button is separated from the message and matches the original design (referenced above).

Pre-merge Checklist

• Have you checked for TypeScript, React or other console errors?

[wojtekn]

It works as expected.

I confirmed the styling fix using the last text. I just wanted to note that it showed an error message and then a successful response below.

[fluiddot]

[...] I just wanted to note that it showed an error message and then a successful response below.

Yes, this is expected when applying the patch, as it forces rendering the error message. Despite the error notice, the behavior of the assistant should be the normal one.