feat(i18n): localize hardcoded UI strings and fix misspelled keys

Move remaining hardcoded English strings (player menus, technical-info
overlay, music/now-playing, live TV, TV search badges, MPV subtitle
settings, accessibility labels, not-found screen, session picker) to
en.json, and correct misspelled keys (occured -> occurred, autorized ->
authorized, liraries -> libraries, jellyseer -> jellyseerr) along with
their usages.

components/livetv/TVGuideProgramCell.tsx

@@ -1,4 +1,5 @@
 import type { BaseItemDto } from "@jellyfin/sdk/lib/generated-client";
+import { t } from "i18next";
 import React from "react";
 import { Animated, Pressable, StyleSheet, View } from "react-native";
 import { Text } from "@/components/common/Text";
@@ -68,7 +69,7 @@ export const TVGuideProgramCell: React.FC<TVGuideProgramCellProps> = ({
             <Text
               style={[styles.liveBadgeText, { fontSize: typography.callout }]}
             >
-              LIVE
+              {t("player.live")}
             </Text>
           </View>
         )}