Enable @typescript-eslint/explicit-member-accessibility on /src (#9785)

* Enable `@typescript-eslint/explicit-member-accessibility` on /src

* Prettier

src/utils/PinningUtils.ts

@@ -22,7 +22,7 @@ export default class PinningUtils {
     /**
      * Event types that may be pinned.
      */
-    static pinnableEventTypes: (EventType | string)[] = [
+    public static pinnableEventTypes: (EventType | string)[] = [
         EventType.RoomMessage,
         M_POLL_START.name,
         M_POLL_START.altName,
@@ -33,7 +33,7 @@ export default class PinningUtils {
      * @param {MatrixEvent} event The event to check.
      * @return {boolean} True if the event may be pinned, false otherwise.
      */
-    static isPinnable(event: MatrixEvent): boolean {
+    public static isPinnable(event: MatrixEvent): boolean {
         if (!event) return false;
         if (!this.pinnableEventTypes.includes(event.getType())) return false;
         if (event.isRedacted()) return false;