Fix patch logic to include workspace root Cargo.toml

[leighmcculloch]

What

Update the soroban examples test workflow to patch both local Cargo.toml files and the workspace root Cargo.toml.

Why

The previous logic only patched local Cargo.toml files found by find, missing the workspace root Cargo.toml which may be located outside the search path.

Related:

• Add Makefile to privacy-pools workspace root to fix soroban-sdk testing soroban-examples#391

[Copilot]

Pull request overview

This PR updates the GitHub workflow that tests soroban-examples to ensure that both local and workspace root Cargo.toml files are patched with local SDK dependencies. The previous implementation only patched files found by find, which missed the workspace root Cargo.toml when it was outside the search path.

Key changes:

• Explicitly includes the workspace root Cargo.toml by using cargo metadata to determine its location
• Uses deduplication via sort -u to avoid patching the same file twice
• Maintains backward compatibility by continuing to patch all local Cargo.toml files found via find

Comments suppressed due to low confidence (1)

.github/workflows/test-with-soroban-examples.yml:90

• The variable $file should be quoted to handle file paths that might contain spaces or special characters. Without quotes, paths with spaces will be split into multiple arguments, causing the script to fail.

          echo Patching "$file" ...
          dir=$(dirname "$file")
          for crate in $crates; do
            rel_path=$(realpath --relative-to="$dir" ${{ github.workspace }}/rs-soroban-sdk/$crate)
            sed -i 's|'"$crate"' = "\([^"]*\)"|'"$crate"' = { path = "'"$rel_path"'" }|g' "$file"