fix: start the workload before scaling out

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 72.38095% with 29 lines in your changes missing coverage. Please review.

Project coverage is 61.35%. Comparing base (c805aed) to head (e002b6a). Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
controllers/apps/transformer_component_workload.go	68.13%	19 Missing and 10 partials :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #8531 +/- ## ========================================== + Coverage 60.47% 61.35% +0.87% ========================================== Files 357 376 +19 Lines 42606 45915 +3309 ========================================== + Hits 25768 28170 +2402 - Misses 14519 15197 +678 - Partials 2319 2548 +229 ``` | [Flag](https://app.codecov.io/gh/apecloud/kubeblocks/pull/8531/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apecloud) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/apecloud/kubeblocks/pull/8531/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apecloud) | `61.35% <72.38%> (+0.87%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apecloud#carryforward-flags-in-the-pull-request-comment) to find out more.

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