Revert more specific class names for editor tokens

Reverts microsoft#103485
Fixes microsoft#106261

I believe that microsoft#103485 broke cases where the markdown renderer creates tokenized strings that are used outside of an editor's dom node (such as in hovers or in webviews)

The safest fix for now is to revert it. We can revist this and make the markdown renderer handle the tokenized output better next iteration

src/vs/editor/common/modes/supports/tokenization.ts

@@ -399,10 +399,10 @@ export function generateTokensCSSForColorMap(colorMap: Color[]): string {
 	let rules: string[] = [];
 	for (let i = 1, len = colorMap.length; i < len; i++) {
 		let color = colorMap[i];
-		rules[i] = `.monaco-editor .mtk${i} { color: ${color}; }`;
+		rules[i] = `.mtk${i} { color: ${color}; }`;
 	}
-	rules.push('.monaco-editor .mtki { font-style: italic; }');
-	rules.push('.monaco-editor .mtkb { font-weight: bold; }');
-	rules.push('.monaco-editor .mtku { text-decoration: underline; text-underline-position: under; }');
+	rules.push('.mtki { font-style: italic; }');
+	rules.push('.mtkb { font-weight: bold; }');
+	rules.push('.mtku { text-decoration: underline; text-underline-position: under; }');
 	return rules.join('\n');
 }