Fix issue to support building with local plugins

[hgaol]

Describe the bug

When using answer build, relative local paths were passed through directly, but go mod edit -replace runs in a temp build dir, so relative paths could resolve incorrectly.

To Reproduce

Steps to reproduce the behavior:

1. run answer build with local plugins, while the replace statement in go.mod is relative paths.

Expected behavior

works as well for local plugins for answer build cmd.

Screenshot

Platform

• Device: [e.g. Desktop, Mobile]
• OS: [e.g. macOS]
• Browser and version: [e.g. Chrome, Safari]
• Version: [e.g. v1.2.0]