xds: add type url to log

[wasaga]

Summary

Adds type-url to XDS logs so that it would be clearer which resource types are updated.

Related issues

User Explanation

Checklist

• reference any related issues
• updated docs
• updated unit tests
• updated UPGRADING.md
• add appropriate tag (improvement / bug / etc)
• ready for review

[coveralls]

coverage: 64.008% (-0.007%) from 64.015% when pulling df9f814 on wasaga/add-xds-type-url into 53573dc on main.

[backport-actions-token]

The backport to 0-23-0 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-0-23-0 0-23-0
# Navigate to the new working tree
cd .worktrees/backport-0-23-0
# Create a new branch
git switch --create backport-4696-to-0-23-0
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick --mainline 1 0b79a2832880dd9f235c4088dc55791545f72ed1
# Push it to GitHub
git push --set-upstream origin backport-4696-to-0-23-0
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-0-23-0

Then, create a pull request where the base branch is 0-23-0 and the compare/head branch is backport-4696-to-0-23-0.