Pass connection file when opening console

Before, we passed the kernel ID when calling `create_client_for_kernel()` in the IPython
Console plugin. This worked, even though that function expected the connection file, because
that function used `find_connection_file()` to fix the path to the connection file. After the
refactor in PR spyder-ide/spyder#19062, the argument passed for the connection file is
expected to be really the file path and no attempt to fix it is made, so now we have to
really pass the connection file.

spyder_notebook/notebookplugin.py

@@ -6,6 +6,7 @@
 """Notebook plugin."""
 
 # Standard library imports
+import logging
 import os.path as osp
 
 # Spyder imports
@@ -20,6 +21,8 @@
 from spyder_notebook.widgets.main_widget import NotebookMainWidget
 from spyder_notebook.utils.localization import _
 
+logger = logging.getLogger(__name__)
+
 
 class NotebookPlugin(SpyderDockablePlugin):
     """Spyder Notebook plugin."""
@@ -94,10 +97,11 @@ def open_notebook(self, filenames=None):
         self.get_widget().open_notebook(filenames)
 
     # ------ Private API ------------------------------------------------------
-    def _open_console(self, kernel_id, tab_name):
+    def _open_console(self, connection_file, tab_name):
         """Open an IPython console as requested."""
+        logger.info(f'Opening console with {connection_file=}')
         ipyconsole = self.get_plugin(Plugins.IPythonConsole)
-        ipyconsole.create_client_for_kernel(kernel_id)
+        ipyconsole.create_client_for_kernel(connection_file)
         ipyclient = ipyconsole.get_current_client()
         ipyclient.allow_rename = False
         ipyconsole.rename_client_tab(ipyclient, tab_name)

spyder_notebook/widgets/main_widget.py

@@ -4,7 +4,11 @@
 # Licensed under the terms of the MIT License
 # (see LICENSE.txt for details)
 
+# Standard library imports
+import os.path as osp
+
 # Third-party imports
+from jupyter_core.paths import jupyter_runtime_dir
 from qtpy.QtCore import Signal
 from qtpy.QtWidgets import QMessageBox, QVBoxLayout
 
@@ -55,8 +59,8 @@ class NotebookMainWidget(PluginMainWidget):
 
     Parameters
     -----------
-    kernel_id: str
-        Id of the kernel to open a console for.
+    connection_file: str
+        Name of the connection file for the kernel to open a console for.
     tab_name: str
         Tab name to set for the created console.
     """
@@ -317,8 +321,10 @@ def open_console(self, client=None):
             )
             return
 
+        connection_file = f'kernel-{kernel_id}.json'
+        connection_file = osp.join(jupyter_runtime_dir(), connection_file)
         self.sig_open_console_requested.emit(
-            kernel_id,
+            connection_file,
             client.get_short_name()
         )