Check kiwi_enable value for '1'-ness, not presence (#10482)

Change from string-y checking for true ('0' is true) to comparison against the string '1', which is only true if exactly equal to '1'.

This has been submitting more test results to Kiwi than we want/need.

.github/workflows/cypress.yaml

@@ -232,7 +232,7 @@ jobs:
             - tests
         environment: Kiwi
         runs-on: ubuntu-latest
-        if: ${{ needs.prepare.outputs.kiwi_enable }}
+        if: ${{ needs.prepare.outputs.kiwi_enable == '1' }}
         steps:
             - name: Download all zip files
               uses: actions/download-artifact@v3