feat: Enable AV1 by default (#1150)

* feat: Enable AV1 by default

* fix the failing unit test.

Author: jallamsetty1

jicofo-selector/src/main/resources/reference.conf

@@ -90,7 +90,7 @@ jicofo {
   codec {
     video {
       av1 {
-        enabled = false
+        enabled = true
         pt = 41
         // Payload type for the associated RTX stream. Set to -1 to disable RTX.
         rtx-pt = 42

jicofo/src/test/kotlin/org/jitsi/jicofo/CodecConfigTest.kt

@@ -25,7 +25,10 @@ import org.jitsi.jicofo.codec.Config.Companion.config
 class CodecConfigTest : ShouldSpec() {
     init {
         context("Default configuration") {
-            config.av1.enabled() shouldBe false
+            config.av1.enabled() shouldBe true
+            config.av1.pt() shouldBe 41
+            config.av1.rtxEnabled() shouldBe true
+            config.av1.rtxPt() shouldBe 42
 
             config.vp8.enabled() shouldBe true
             config.vp8.pt() shouldBe 100