[release-1.11] Fixed the image overriding issue for Jobs

[knative-prow-robot]

This is an automated cherry-pick of #1554

[houshengbo]

/lgtm /approve

[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: houshengbo, knative-prow-robot

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[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (d481e87) 79.22% compared to head (48f1953) 79.22%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release-1.11 #1555 +/- ## ============================================= Coverage 79.22% 79.22% ============================================= Files 40 40 Lines 1800 1800 ============================================= Hits 1426 1426 Misses 272 272 Partials 102 102 ``` | [Files Changed](https://app.codecov.io/gh/knative/operator/pull/1555?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=knative) | Coverage Δ | | |---|---|---| | [pkg/reconciler/common/images.go](https://app.codecov.io/gh/knative/operator/pull/1555?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=knative#diff-cGtnL3JlY29uY2lsZXIvY29tbW9uL2ltYWdlcy5nbw==) | `78.40% <100.00%> (ø)` | | | [pkg/reconciler/common/transformers.go](https://app.codecov.io/gh/knative/operator/pull/1555?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=knative#diff-cGtnL3JlY29uY2lsZXIvY29tbW9uL3RyYW5zZm9ybWVycy5nbw==) | `82.60% <100.00%> (ø)` | |

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