Make markdown refresh more stable

Fixes #80680

- Always sync the current preview line number with the editor, even when `scrollEditorWithPreview` is false

- If the md file is focused and refresh is called, do not try resetting the current line to match the editor file. This mainly effects the case where `scrollEditorWithPreview` is false

extensions/markdown-language-features/preview-src/index.ts

@@ -157,20 +157,18 @@ document.addEventListener('click', event => {
 	}
 }, true);
 
-if (settings.scrollEditorWithPreview) {
-	window.addEventListener('scroll', throttle(() => {
-		if (scrollDisabled) {
-			scrollDisabled = false;
-		} else {
-			const line = getEditorLineNumberForPageOffset(window.scrollY);
-			if (typeof line === 'number' && !isNaN(line)) {
-				messaging.postMessage('revealLine', { line });
-				state.line = line;
-				vscode.setState(state);
-			}
+window.addEventListener('scroll', throttle(() => {
+	if (scrollDisabled) {
+		scrollDisabled = false;
+	} else {
+		const line = getEditorLineNumberForPageOffset(window.scrollY);
+		if (typeof line === 'number' && !isNaN(line)) {
+			messaging.postMessage('revealLine', { line });
+			state.line = line;
+			vscode.setState(state);
 		}
-	}, 50));
-}
+	}
+}, 50));
 
 function escapeRegExp(text: string) {
 	return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');