🎯 refactor: LaTeX and Math Rendering (#7952)

* refactor: Markdown LaTeX processing

- Added micromark-extension-llm-math as a dependency in package.json and package-lock.json.
- Updated Vite configuration to alias micromark-extension-math.
- Modified Markdown components to use singleDollarTextMath: false for improved LaTeX rendering.
- Refactored latex utility functions to enhance LaTeX processing and escaping mechanisms.

* chore: linting of `EditTextPart`

* fix: handle key up to initiate edit of latest user message by adding id prop to Edit Message HoverButton

* chore: linting in Artifact component

* refactor: enhance LaTeX preprocessing functionality

- Updated `preprocessLaTeX` to improve handling of currency and LaTeX expressions.
- Introduced optimized regex patterns for better performance.
- Added support for escaping mhchem commands and handling code blocks.
- Enhanced tests for various LaTeX scenarios, including currency and special characters.
- Refactored existing tests to align with new preprocessing logic.

* chore: filter out false positives in unused packages workflow

- Added a grep command to exclude the micromark-extension-llm-math package from the list of unused dependencies in the GitHub Actions workflow.

client/src/components/Artifacts/Artifact.tsx

@@ -40,7 +40,7 @@ const defaultType = 'unknown';
 const defaultIdentifier = 'lc-no-identifier';
 
 export function Artifact({
-  node,
+  node: _node,
   ...props
 }: Artifact & {
   children: React.ReactNode | { props: { children: React.ReactNode } };
@@ -95,7 +95,7 @@ export function Artifact({
       setArtifacts((prevArtifacts) => {
         if (
           prevArtifacts?.[artifactKey] != null &&
-          prevArtifacts[artifactKey].content === content
+          prevArtifacts[artifactKey]?.content === content
         ) {
           return prevArtifacts;
         }