fix(JingleSessionPC): Do not try to re-use inactive mid for new remote ssrcs.

The direction was marked as 'inactive' only on Firefox as Safari had audio issues when an inactive mid is re-used. Chrome (in unified-plan) needs the direction of the mid in remote desc to be set to 'inactive' for a 'removetrack' to be fired on the associated media stream whenever a remote source is removed.

modules/xmpp/JingleSessionPC.js

                     if (mid > -1) {
                         remoteSdp.media[mid] = remoteSdp.media[mid].replace(`${line}\r\n`, '');
 
-                        // Change the direction to "inactive" only on Firefox. Audio fails on
-                        // Safari (possibly Chrome in unified plan mode) when we try to re-use inactive
-                        // m-lines due to a webkit bug.
-                        // https://bugs.webkit.org/show_bug.cgi?id=211181
-                        if (browser.isFirefox()) {
-                            remoteSdp.media[mid] = remoteSdp.media[mid].replace('a=sendonly', 'a=inactive');
-                        }
+                        // Change the direction to "inactive".
+                        remoteSdp.media[mid] = remoteSdp.media[mid].replace('a=sendonly', 'a=inactive');
                     }
                 });
             }

package-lock.json

       }
     },
     "@jitsi/sdp-interop": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/@jitsi/sdp-interop/-/sdp-interop-1.0.3.tgz",
-      "integrity": "sha512-3dua2TTDWwpFpdEl+sMEei4d/+VgVXMpQRCPdvzzOidiiHnJ0vAJONfndKJmhhaqYv+e71Ry5IPGV1ZSWjIDJw==",
+      "version": "github:jitsi/sdp-interop#5fc4af6dcf8a6e6af9fedbcd654412fd47b1b4ae",
+      "from": "github:jitsi/sdp-interop#5fc4af6dcf8a6e6af9fedbcd654412fd47b1b4ae",
       "requires": {
         "lodash.clonedeep": "4.5.0",
         "sdp-transform": "2.3.0"

package.json

   "readmeFilename": "README.md",
   "dependencies": {
     "@jitsi/js-utils": "1.0.2",
-    "@jitsi/sdp-interop": "1.0.3",
+    "@jitsi/sdp-interop": "github:jitsi/sdp-interop#5fc4af6dcf8a6e6af9fedbcd654412fd47b1b4ae",
     "@jitsi/sdp-simulcast": "0.4.0",
     "async": "0.9.0",
     "base64-js": "1.3.1",