perf(chatbot): keep the props passed to the Ask Ariane chat panel stable across renders

[SamuelHassine]

Summary

AskArianePanel (opencti-platform/opencti-front/src/private/components/chatbox/AskArianePanel.tsx) renders the XTM One chat panel (ChatPanel from @filigran/chatbot) with several props rebuilt on every render: requestHeaders, pageContext, onRelativeLinkClick, onTaskComplete, apiEndpoints, user, promptSuggestions and logoIcon.

The chat panel memoizes its message rows (MessageRow) and its markdown renderer (MarkdownMessage) so that settled messages are not re-rendered while an answer streams. A prop with a new identity defeats that on every render of AskArianePanel, which happens on every route change (useLocation), on banner height and theme changes, and on every width step of a sidebar resize (the chatbot context carries sidebarWidth, so AskArianeButton re-renders the panel while the user drags).

Impact (read from the @filigran/chatbot 3.10.0 sources)

• logoIcon (inline JSX), onRelativeLinkClick (a plain function) and apiEndpoints (an inline object, which the panel turns into the resolveAttachmentUrl / onDownloadFile callbacks) are compared by every MessageRow: each host render re-renders every message of the conversation and re-parses its markdown.
• apiEndpoints is a dependency of the agent list effect (useAgents): each host render fetches <base>/chatbot/agents again.
• While a draft is active, requestHeaders is a new { 'opencti-draft-id': ... } object on each render. It is a dependency of the agents, agent suggestions, prompts and quota effects, which fetch again, and of ChatImage, which downloads every host-relative image of the conversation again.

Task

Give each of these props a stable identity keyed on what it actually depends on, with no behaviour change:

• useMemo for requestHeaders (on the draft id), pageContext (on location.pathname), user (on the first name), promptSuggestions (on t_i18n) and logoIcon;
• useCallback for the relative link handler (on navigate) and for onTaskComplete;
• a module-level constant for apiEndpoints, keeping its explanatory comments.

A change in @filigran/chatbot (FiligranHQ/filigran-ui) is also making the panel more tolerant of prop churn. The host-side change is still needed: the library cannot compare a JSX logoIcon, and stable props avoid the work altogether.