fix(frontend): Attempt to resolve TypeError in RichTextInput.svelte

Fixes an issue where `ue.getWordAtDocPos is not a function` would be thrown in `MessageInput.svelte`.

The error was caused by a timing issue where the `getWordAtDocPos` method on the `RichTextInput` component was not available when called from an event handler within the same component.

This change refactors the code to pass the `getWordAtDocPos` function as a callback prop from `RichTextInput` to `MessageInput`, ensuring it's available when needed.

src/lib/apis/ollama/index.ts

@@ -331,7 +331,7 @@ export const generateTextCompletion = async (token: string = '', model: string,
 };
 
 export const generateChatCompletion = async (token: string = '', body: object) => {
-	let controller = new AbortController();
+	const controller = new AbortController();
 	let error = null;
 
 	const res = await fetch(`${OLLAMA_API_BASE_URL}/api/chat`, {