bpo-34019: Fix wrong arguments for Opera Browser (#8047)

The Opera Browser was using a outdated command line invocation that resulted in an incorrect URL being opened in the browser when requested using the webbrowser module.

* Correct the arguments passed to the Opera Browser when opening a new URL.
diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
index 2a5729b..d717193 100755
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -308,11 +308,10 @@
 class Opera(UnixBrowser):
     "Launcher class for Opera browser."
 
-    raise_opts = ["-noraise", ""]
-    remote_args = ['-remote', 'openURL(%s%action)']
+    remote_args = ['%action', '%s']
     remote_action = ""
-    remote_action_newwin = ",new-window"
-    remote_action_newtab = ",new-page"
+    remote_action_newwin = "--new-window"
+    remote_action_newtab = ""
     background = True