fix(ci): use absolute path for replace directive in Docker build

The Docker mounts v3 at the same absolute path, so change the replace
directive to use the absolute workspace path instead of removing it.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/cross-compile-test-v3.yml

@@ -96,12 +96,12 @@ jobs:
         working-directory: test-cross-compile/crosstest
         run: task common:setup:docker
 
-      - name: Remove replace directive for Docker build
+      - name: Fix replace directive for Docker build
         working-directory: test-cross-compile/crosstest
         run: |
-          # Remove the replace directive since Docker won't have access to the local v3 path
+          # Change the replace directive to use absolute path that matches Docker mount
           go mod edit -dropreplace github.com/wailsapp/wails/v3
-          go mod tidy
+          go mod edit -replace github.com/wailsapp/wails/v3=${{ github.workspace }}/v3
 
       - name: Cross-compile for ${{ matrix.target_os }}/${{ matrix.target_arch }}
         working-directory: test-cross-compile/crosstest