revert: remove proxy apk at mediamtx

app/src/main/kotlin/com/bodycamera/twentyfoulabs/data/ptt/PttAudioClient.kt

@@ -858,27 +858,22 @@ class PttAudioClient @Inject constructor(
         suppliedUrl: String?,
         fallbackPath: String
     ): String {
+
         if (suppliedUrl.isNullOrBlank()) {
             return "$MEDIA_BASE_URL/$fallbackPath"
         }
 
-        // Rails (BROWSER_PROXY) envía "/media-mtx/ptt/u/:id/whip".
-        // MediaMTX espera "http://host:8889/ptt/u/:id/whip" (sin prefijo media-mtx).
-        val raw = suppliedUrl.trim()
-
         return when {
-            raw.startsWith("http://") || raw.startsWith("https://") -> {
-                if (raw.contains("/media-mtx/")) {
-                    "$MEDIA_BASE_URL/" + raw.substringAfter("/media-mtx/").trimStart('/')
-                } else {
-                    raw
-                }
-            }
+            suppliedUrl.startsWith(
+                "http://"
+            ) ||
+                suppliedUrl.startsWith(
+                    "https://"
+                ) -> suppliedUrl
 
-            else -> {
-                val path = raw.trimStart('/').removePrefix("media-mtx/")
-                "$MEDIA_BASE_URL/$path"
-            }
+            else ->
+                "$MEDIA_BASE_URL/" +
+                    suppliedUrl.trimStart('/')
         }
     }