Use styleOverrides instead of dsfr patch for mui links

Author: garronej

src/mui.tsx

@@ -187,6 +187,14 @@ function createMuiDsfrTheme(params: { isDark: boolean }): MuiTheme {
                     }
                 }
             },
+            "MuiTypography": {
+                "styleOverrides": {
+                    "root": {
+                        //Fixes double underline: https://user-images.githubusercontent.com/6702424/206064575-4f036145-ff40-47db-aabd-560f29136e71.png
+                        "backgroundImage": "unset"
+                    }
+                }
+            },
             ...(() => {
                 const nonTypedMuiComponents = {
                     "MuiDataGrid": {

src/scripts/build/patchCssForMui.ts

@@ -19,12 +19,6 @@ export function patchCssForMui(params: { rawDsfrCssCode: string }) {
             (rule.selectors = rule.selectors.map((selector: string) => {
                 const selectorNotMui = `${selector}:not([class^="Mui"])`;
 
-                if (media === "root") {
-                    if (selector === "[href]") {
-                        return selectorNotMui;
-                    }
-                }
-
                 if (media === "(hover: hover) and (pointer: fine)") {
                     if (
                         selector === "button:not(:disabled):hover" ||