fix: upgrader error msg to show current/max (#2491)

Provides more information in the error message so users can better understand the error state.

Author: SgtPooki

packages/libp2p/src/upgrader.ts

@@ -471,7 +471,7 @@ export class DefaultUpgrader implements Upgrader {
           const streamCount = countStreams(protocol, 'outbound', connection)
 
           if (streamCount >= outgoingLimit) {
-            const err = new CodeError(`Too many outbound protocol streams for protocol "${protocol}" - limit ${outgoingLimit}`, codes.ERR_TOO_MANY_OUTBOUND_PROTOCOL_STREAMS)
+            const err = new CodeError(`Too many outbound protocol streams for protocol "${protocol}" - ${streamCount}/${outgoingLimit}`, codes.ERR_TOO_MANY_OUTBOUND_PROTOCOL_STREAMS)
             muxedStream.abort(err)
 
             throw err