Help Center: Update Help Center Wapuu chat "Start new chat" text

[agrullon95]

Fixes: #91642

Proposed Changes

• Updates Help Center Wapuu chat "Start a new chat" text with "Clear Conversation"

Before:

After:

Why are these changes being made?

• Ensure we don't include the word "chat" to prevent user confusion/misinterpretation.

Testing Instructions

• Checkout branch
• Sync ETK to your sandbox
• Open Help Center, Click "Still need help?" button, click the three dot menu in the help center and verify the text has been updated.

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-110537

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-110537&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-110537&env=a8c-for-agencies

[escapemanuele]

LGTM 👍

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• editing-toolkit

To test WordPress.com changes, run install-plugin.sh $pluginSlug update/help-center-wapuu-chat-new-chat-text on your sandbox.

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[a8ci18n]

This Pull Request is now available for translation here: https://translate.wordpress.com/deliverables/14386038

Some locales (Hebrew, Japanese) have been temporarily machine-translated due to translator availability. All other translations are usually ready within a few days. Untranslated and machine-translated strings will be sent for translation next Monday and are expected to be completed by the following Friday.

Thank you @agrullon95 for including a screenshot in the description! This is really helpful for our translators.

[a8ci18n]

Translation for this Pull Request has now been finished.