fix: _append_tool_name list index out of range (#3914)

* fix: _append_tool_name list index out of range

* chore: update release-please config to release from v1 branch

PiperOrigin-RevId: 641271724

---------

Co-authored-by: Nicolò Boschi <boschi1997@gmail.com>

.github/release-please.yml

@@ -4,6 +4,9 @@ manifest: true
 # NOTE: this section is generated by synthtool.languages.python
 # See https://github.com/googleapis/synthtool/blob/master/synthtool/languages/python.py
 branches:
+- branch: v1.54
+  handleGHRelease: true
+  releaseType: python
 - branch: v0
   handleGHRelease: true
   releaseType: python

google/cloud/aiplatform/telemetry.py

@@ -53,7 +53,7 @@ def tool_context_manager(tool_name: str) -> None:
 
 
 def _append_tool_name(tool_name: str) -> None:
-    if _tool_names_to_append[-1] != tool_name:
+    if not _tool_names_to_append or _tool_names_to_append[-1] != tool_name:
         _tool_names_to_append.append(tool_name)